Elementary School Math Quiz: Solve Measurement Word Problems
20 questions · exam conditions
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Solve Measurement Word ProblemsQuestion 1 of 20

A movie starts at 2:45 PM and ends at 5:20 PM. During the movie, there was a 15-minute intermission. How long was the actual movie time without the intermission?

2 hours 20 minutes
2 hours 35 minutes
2 hours 50 minutes
3 hours 5 minutes
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Elementary School Math Quiz

Elementary School Math Quiz: Solve Measurement Word Problems

Practice Solve Measurement Word Problems in Elementary School Math with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Solve Measurement Word Problems, giving you a quick way to practice the rules, question types, and explanations that matter most for Elementary School Math.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

A movie starts at 2:45 PM and ends at 5:20 PM. During the movie, there was a 15-minute intermission. How long was the actual movie time without the intermission?

  1. 2 hours 20 minutes (correct answer)
  2. 2 hours 35 minutes
  3. 2 hours 50 minutes
  4. 3 hours 5 minutes
Explanation: Total time from 2:45 PM to 5:20 PM: 5:20 - 2:45 = 2 hours 35 minutes. Subtract the 15-minute intermission: 2 hours 35 minutes - 15 minutes = 2 hours 20 minutes. Choice B is the total time including intermission. Choice C adds the intermission instead of subtracting. Choice D miscalculates the total time period.

Question 2

Carlos buys 3 notebooks at $2.40 each. What is the total cost?

  1. $6.40
  2. $72.00
  3. $4.80
  4. $7.20 (correct answer)
Explanation: CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a money problem requiring multiplication. The problem asks for the total cost. We need to multiply equal amounts. Carlos buys 3 notebooks at $2.40 each, and we need the total cost in dollars. Multiply the price by the number of notebooks: $2.40 × 3 = $7.20. A common distractor is dividing instead of multiplying, like $2.40 ÷ 3 = $0.80 but not matching, or arithmetic errors with decimals like $2.40 × 2 = 4.80.Helpstudentssolvemeasurementwordproblems:Step1−Identifywhat′sbeingmeasured:Distance?Time?Volume?Mass?Money?Step2−Determineoperation:Total/combine(add).Difference/remaining(subtract).Equalgroups/repeated(multiply).Share/split(divide).Step3−Checkunits:Dounitsmatch?Ifnot,convertlargerunittosmallerunitfirst(4.80. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (5 = 500 cents). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. For money, remember decimal point and dollar sign ($45.75 means 45 dollars and 75 cents). Watch for: arithmetic errors with decimals, using wrong operation.

Question 3

Jamal ran 2 km, and then ran 750 m more. What is the total distance in meters?

  1. 2,075 m
  2. 2,750 m (correct answer)
  3. 2,700 m
  4. 1,250 m
Explanation: CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a distance problem requiring conversion then addition. The problem asks for the total distance. We need to convert units then solve. Jamal ran 2 km and then ran 750 m more, and we need the total distance in meters. First convert 2 km to meters: 2 km × 1,000 m/km = 2,000 m. Then add the distances: 2,000 m + 750 m = 2,750 m. A common distractor is subtracting instead of adding, such as 2,000 m - 750 m = 1,250 m, or making an arithmetic error like 2,000 m + 700 m = 2,700 m. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (2 km = 2,000 m). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Use number line diagrams for distance, time, or measurement scales to visualize problems.

Question 4

A bag has 3 kg of rice and another has 450 g. What is the total mass in grams?

  1. 4,500 g
  2. 750 g
  3. 3,045 g
  4. 3,450 g (correct answer)
Explanation: CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a mass problem requiring conversion then addition. The problem asks for the total mass. We need to convert units then solve. A bag has 3 kg of rice and another has 450 g, and we need the total mass in grams. First convert 3 kg to grams: 3 kg×1,000 g/kg=3,000 g3 \, \text{kg} \times 1,000 \, \text{g/kg} = 3,000 \, \text{g}. Then add the masses: 3,000 g+450 g=3,450 g3,000 \, \text{g} + 450 \, \text{g} = 3,450 \, \text{g}. A common distractor is adding without conversion, like 3+450=4533 + 450 = 453, but not matching options, or arithmetic errors like 3,000 g+45 g=3,045 g3,000 \, \text{g} + 45 \, \text{g} = 3,045 \, \text{g}. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (3 kg=3,000 g3 \, \text{kg} = 3,000 \, \text{g}). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Use number line diagrams for distance, time, or measurement scales to visualize problems.

Question 5

A recipe needs 1,200 mL of milk. Amir has 1 L. How many milliliters more are needed?

  1. 1,100 mL
  2. 200 mL (correct answer)
  3. 2,200 mL
  4. 20 mL
Explanation: CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a volume problem requiring conversion then subtraction. The problem asks for the difference. We need to convert units then solve. A recipe needs 1,200 mL of milk, and Amir has 1 L, so we need to find how many milliliters more are needed. First convert 1 L to milliliters: 1 L × 1,000 mL/L = 1,000 mL. Then subtract: 1,200 mL - 1,000 mL = 200 mL. A common distractor is adding instead of subtracting, like 1,200 mL + 1,000 mL = 2,200 mL, or forgetting conversion and doing 1,200 - 1 = 1,199 but not matching. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (2 L = 2,000 mL). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Represent measurement quantities with bars or models showing parts and totals.

Question 6

Amir has 5,000 g of flour and uses 2 kg. How many grams of flour are left?

  1. 2,500 g
  2. 7,000 g
  3. 3,000 g (correct answer)
  4. 4,800 g
Explanation: Since 2 kg equals 2,000 g, subtracting 2,000 g from 5,000 g leaves 3,000 g, making Choice C correct. Choice A, 2,500 g, could come from mistakenly splitting the flour in half instead of subtracting the amount used. Choice B, 7,000 g, comes from adding the two amounts instead of subtracting them. Choice D, 4,800 g, comes from subtracting only 200 g, as if 2 kg were mistaken for 200 g.

Question 7

A movie started at 2:15 PM and ended at 4:30 PM. How long was the movie?

  1. 2 hr 15 min (correct answer)
  2. 3 hr 15 min
  3. 2 hr 45 min
  4. 1 hr 45 min
Explanation: This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a time problem requiring subtraction, possibly with conversion. The problem asks for the difference in time. We need to find the interval between start and end times. The movie started at 2:15 PM and ended at 4:30 PM, and we need the duration in hours and minutes. From 2:15 PM to 4:15 PM is 2 hours, then add 15 more minutes to 4:30 PM, for a total of 2 hr 15 min. A common distractor like 2 hr 45 min might come from adding the minutes incorrectly or subtracting wrong, such as miscalculating the hour difference. To help students solve measurement word problems: Step 1 - Identify what's being measured: Time. Step 2 - Determine operation: Difference (subtract). Step 3 - Check units: Units in hours and minutes, convert if needed (e.g., borrow 60 min for subtraction). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. For time, remember 60 minutes = 1 hour, so can't add 45 min + 30 min = 75 min directly—must convert to 1 hr 15 min; use a clock or number line to visualize.

Question 8

Jamal ran 5 km in a race and already ran 3,250 m. How many meters are left?

  1. 6,250 m
  2. 1,750 m (correct answer)
  3. 2,750 m
  4. 1,250 m
Explanation: This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a distance problem requiring conversion then subtraction. The problem asks for the remaining amount. We need to convert units then solve by finding what's left. Jamal is running a 5 km race and has already run 3,250 m, and we need to find how many meters are left. First convert the larger unit to the smaller unit: 5 km=5×1,000 mkm=5,000 m5 \text{ km} = 5 \times 1,000 \, \frac{\text{m}}{\text{km}} = 5,000 \, \text{m}. Then perform the operation: 5,000 m−3,250 m=1,750 m5,000 \, \text{m} - 3,250 \, \text{m} = 1,750 \, \text{m}. A common distractor like 1,250 m might result from subtracting incorrectly or forgetting to convert units properly, such as mistakenly subtracting 3,250 from 3,750. To help students solve measurement word problems: Step 1 - Identify what's being measured: Distance. Step 2 - Determine operation: Remaining (subtract). Step 3 - Check units: Units don't match, so convert larger unit to smaller unit first (5 km=5,000 m5 \text{ km} = 5,000 \, \text{m}). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Use number line diagrams for distance to visualize problems.

Question 9

Maya biked 3.5 km on Saturday and 2.4 km on Sunday. What is the total distance?

  1. 4.9 km
  2. 59 km
  3. 6.1 km
  4. 5.9 km (correct answer)
Explanation: This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a distance problem requiring addition. The problem asks for the total distance. We need to combine quantities. Maya biked 3.5 km on Saturday and 2.4 km on Sunday, and we need the total distance in kilometers. Add the distances: 3.5 km + 2.4 km = 5.9 km. A common distractor like 59 km fails because it might come from handling decimal incorrectly, such as ignoring the decimal point and adding 35 + 24 = 59. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance. Step 2 - Determine operation: Total/combine (add). Step 3 - Check units: Units match (kilometers). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Use number line diagrams for distance to visualize problems. Watch for: arithmetic errors with decimals, misplaced decimal point.

Question 10

Four friends share 2 L of juice equally. How many milliliters does each person get?

  1. 800 mL
  2. 250 mL
  3. 500 mL (correct answer)
  4. 2,000 mL
Explanation: This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a volume problem requiring conversion then division. The problem asks for the individual share. We need to convert units then solve. Four friends share 2 L of juice equally, and we need the milliliters each gets. First convert the larger unit to the smaller unit: 2 L = 2 L × 1,000 mL/L = 2,000 mL. Then divide the total: 2,000 mL ÷ 4 = 500 mL. A common distractor like 250 mL fails because it might result from dividing 1,000 mL by 4 instead of converting correctly. Help students solve measurement word problems: Step 1 - Identify what's being measured: Volume. Step 2 - Determine operation: Share/split (divide). Step 3 - Check units: Units don't match, so convert larger unit to smaller unit first (2 L = 2,000 mL). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Represent measurement quantities with bars or models showing parts and totals. Watch for: forgetting to convert units, using wrong operation.

Question 11

Sofia biked 4.5 mi on Saturday and 3.2 mi on Sunday. What is the total distance she biked?

  1. 7.25 mi
  2. 7.7 mi (correct answer)
  3. 1.3 mi
  4. 8.3 mi
Explanation: CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a distance problem requiring addition. The problem asks for the total distance. We need to combine quantities. Sofia biked 4.5 mi on Saturday and 3.2 mi on Sunday, and we need the total distance in miles. Add the distances: 4.5+3.2=7.74.5 + 3.2 = 7.7 mi. A common distractor is subtracting instead of adding, like 4.5−3.2=1.34.5 - 3.2 = 1.3 mi, or mishandling decimals like 4.5+2.8=7.34.5 + 2.8 = 7.3 mi but not matching. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first. Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Watch for: forgetting to convert units, using wrong operation, arithmetic errors with decimals, incomplete two-step problems, not including units in answers.

Question 12

Keisha bought a snack for $2.75 and a drink for $1.50. What is the total cost?

  1. $4.25 (correct answer)
  2. $3.25
  3. $5.25
  4. $4.15
Explanation: Adding 2.75+1.502.75 + 1.50 gives 4.254.25: combine the cents (0.75+0.50=1.250.75 + 0.50 = 1.25) and the dollars (2+1=32 + 1 = 3), then add the extra dollar from regrouping the cents (3+1.25=4.253 + 1.25 = 4.25). Choice B comes from forgetting to regroup that extra dollar from the cents, leaving $3.25. Choice C comes from adding an extra dollar, as if the drink cost $2.50 instead of $1.50. Choice D comes from misreading the drink's price as $1.40 instead of $1.50.

Question 13

Tommy's soccer practice starts at 4:30 PM and lasts 1 hour and 45 minutes. After practice, he needs 45 minutes to get home and 30 minutes to shower and eat dinner. What time will he finish dinner?

  1. 6:45 PM
  2. 7:15 PM
  3. 7:30 PM (correct answer)
  4. 8:00 PM
Explanation: The correct answer is C, 7:30 PM. Practice ends at 6:15 PM (4:30 PM plus 1 hour 45 minutes). Adding the 45 minutes to get home brings the time to 7:00 PM, and adding the 30 minutes for showering and eating brings it to 7:30 PM. Choice A, 6:45 PM, comes from skipping the 45 minutes to get home. Choices B and D come from small errors adding the three time intervals together.

Question 14

Marcus practiced piano 35 min each day for 4 days. What is the total time he spent practicing?

  1. 39 min
  2. 120 min
  3. 75 min
  4. 140 min (correct answer)
Explanation: Multiplying 35 minutes by 4 days gives 140 minutes, making Choice D correct. Choice A, 39 minutes, comes from adding 35 and 4 instead of multiplying them. Choice B, 120 minutes, comes from using 30 minutes a day instead of the actual 35 minutes. Choice C, 75 minutes, comes from doubling 35 and adding a small amount rather than multiplying by 4.

Question 15

A bag of apples weighs 2 kg and a bag of oranges weighs 1,500 g. What is the total weight in grams?

  1. 3,500 g (correct answer)
  2. 3,000 g
  3. 1,700 g
  4. 2,500 g
Explanation: Converting 2 kg to grams gives 2,000 g, and adding the 1,500 g of oranges gives a total of 3,500 g. Choice B (3,000 g) forgets to include the oranges' full weight. Choices C (1,700 g) and D (2,500 g) come from adding only part of one weight or misconverting kilograms to grams.

Question 16

Chen pours 2 L of juice into 4 equal cups. How many milliliters are in each cup?

  1. 500 mL (correct answer)
  2. 50 mL
  3. 2,004 mL
  4. 250 mL
Explanation: CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a volume problem requiring conversion then division. The problem asks for the individual share. We need to convert units then solve. Chen pours 2 L of juice into 4 equal cups, and we need to find how many milliliters are in each cup. First convert 2 L to milliliters: 2 L × 1,000 mL/L = 2,000 mL. Then divide by the number of cups: 2,000 mL ÷ 4 = 500 mL. A common distractor is forgetting to convert units and dividing 2 L ÷ 4 = 0.5 L, then perhaps misinterpreting as 50 mL, or dividing incorrectly like 2,000 mL ÷ 8 = 250 mL. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (2 L = 2,000 mL). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Represent measurement quantities with bars or models showing parts and totals.

Question 17

Yuki has $45.75 and buys items costing $12.50 and $18.25. How much is left?

  1. $15.00 (correct answer)
  2. $33.25
  3. $14.00
  4. $30.75
Explanation: This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a money problem requiring addition then subtraction. The problem asks for the remaining amount. We need to combine quantities then find what's left. Yuki starts with $45.75 and buys items for $12.50 and $18.25, and we need to find how much money is left. First find total cost: $$12.50 + $18.25 = $30.75.Thensubtractfromstartingamount:. Then subtract from starting amount: $45.75 - $30.75 = $15.00.Acommondistractorlike. A common distractor like 30.75 might come from stopping after adding the costs and not completing the two-step problem by subtracting. To help students solve measurement word problems: Step 1 - Identify what's being measured: Money. Step 2 - Determine operation: Total (add) then remaining (subtract). Step 3 - Check units: Units match (all in dollars), so no conversion needed. Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. For money, remember decimal point and dollar sign ($45.75 means 45 dollars and 75 cents), and watch for incomplete two-step problems.

Question 18

Four friends share 2 L of juice equally. How many milliliters does each get?

  1. 2,000 mL
  2. 1,000 mL
  3. 250 mL
  4. 500 mL (correct answer)
Explanation: This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a volume problem requiring conversion then division. The problem asks for the individual share. We need to convert units then divide total. Four friends share 2 L of juice equally, and we need to find how many milliliters each gets. First convert the larger unit to the smaller unit: 2 L = 2 L × 1,000 mL/L = 2,000 mL. Then perform the operation: 2,000 mL ÷ 4 = 500 mL. A common distractor like 250 mL might result from dividing incorrectly, such as 1,000 ÷ 4 instead of converting fully, or forgetting the conversion. To help students solve measurement word problems: Step 1 - Identify what's being measured: Volume. Step 2 - Determine operation: Share/split (divide). Step 3 - Check units: Convert to mL for the answer (2 L = 2,000 mL). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Watch for forgetting to convert units or arithmetic errors in division.

Question 19

Maya practiced piano 45 min each day for 5 days. What is the total time?

  1. 200 min
  2. 225 min (correct answer)
  3. 9 min
  4. 50 min
Explanation: This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a time problem requiring multiplication. The problem asks for the total time. We need to multiply equal amounts. Maya practiced piano for 45 minutes each day over 5 days, and we need the total time in minutes. Perform the operation: 45 min×5=225 min45 \text{ min} \times 5 = 225 \text{ min}. A common distractor like 50 min might come from adding instead of multiplying or making an arithmetic error with the numbers. To help students solve measurement word problems: Step 1 - Identify what's being measured: Time. Step 2 - Determine operation: Total/combine repeated amounts (multiply). Step 3 - Check units: Units match (all in minutes), so no conversion needed. Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. For time, remember 60 minutes=1 hour60 \text{ minutes} = 1 \text{ hour}, so if total exceeds 60, convert appropriately, but here it's fine in minutes.

Question 20

A recipe needs 2 L of milk, sold in 500 mL cartons. How many cartons are needed?

  1. 2 cartons
  2. 5 cartons
  3. 4 cartons (correct answer)
  4. 3 cartons
Explanation: This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a volume problem requiring conversion then division. The problem asks for the number of cartons needed. We need to convert units then divide total. The recipe requires 2 L of milk, sold in 500 mL cartons, and we need to find how many cartons are needed. First convert the larger unit to the smaller unit: 2 L=2 L×1,000 mL/L=2,000 mL2 \text{ L} = 2 \text{ L} \times 1,000 \text{ mL/L} = 2,000 \text{ mL}. Then perform the operation: 2,000 mL÷500 mL/carton=4 cartons2,000 \text{ mL} \div 500 \text{ mL/carton} = 4 \text{ cartons}. A common distractor like 3 cartons might come from forgetting to convert units and dividing 2 by 500 incorrectly or using the wrong operation. To help students solve measurement word problems: Step 1 - Identify what's being measured: Volume. Step 2 - Determine operation: Share/split (divide). Step 3 - Check units: Units don't match, so convert larger unit to smaller unit first (2 L=2,000 mL)(2 \text{ L} = 2,000 \text{ mL}). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Watch for forgetting to convert units or arithmetic errors with division.