Practice Test 12 - 3rd Grade Math

20 questions. Answer them in any order, then submit to see your score and every explanation.

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1. Jake's soccer practice is 1 hour and 30 minutes long. If practice ends at 5:15 PM, what time did practice start?
2. Marcus divided a circle into 3 equal parts. Each part is what fraction?
3. A backpack has a mass of 3,200 grams. A lunchbox has a mass of 800 grams. What is the difference in mass between the backpack and the lunchbox?
4. A shape has 4 sides that are all equal in length, but it has NO right angles. What is the best name for this shape?
5. A parking lot has 6 rows with 43 cars in each row. If 25 cars leave, how many cars are still in the parking lot?
6. Point W shows $\frac{1}{4}$ and point X shows $\frac{1}{2}$ on a number line. From point W to point X, how many parts of size $\frac{1}{4}$ fit?
7. Which length was measured the least number of times?
8. Carlos drew a quadrilateral with these properties: opposite sides are parallel, opposite sides are equal in length, but it has no right angles. His friend Maya says this shape belongs to two different categories of quadrilaterals. Which two categories is Maya referring to?
9. A rectangle has a width of 7 units. Its length is split into two parts: one part is 4 units, and the other part is unknown. The total area of the rectangle is 70 square units. What is the missing length?
10. Which symbol makes this statement true: $\frac{4}{6}$ ___ $\frac{5}{6}$?
11. Marcus scored 458 points in the first game and 367 points in the second game. How many points did he score altogether?
12. Tommy measures the perimeter of his rectangular garden and writes $8 + 6 + 8 + 6 = 28$ feet. Which statement best explains what his mathematical representation communicates about the garden?
13. A rectangle has a width of 6 units. Its length is split into two parts: 2 units and 4 units. What is the total area of the rectangle, found by adding the area of each part?
14. Look at the diagram. Which two lines appear to be perpendicular to line $MN$?
15. Which fraction is greater: $\frac{1}{4}$ or $\frac{1}{2}$?
16. A bakery arranges muffins in rows of $6$. If there are $48$ muffins total, and they want to reorganize them into rows of $8$, how many rows will they have?
17. Compare same-size brownies: Chen has $\frac{1}{3}$, Emma has $\frac{1}{6}$. Who has more?
18. Sarah is calculating $2 \times 6 \times 5$. She notices that $6 \times 5 = 30$ is easy to multiply. Which property allows Sarah to calculate $(2 \times 6) \times 5$ or $2 \times (6 \times 5)$ and get the same answer?
19. Mr. Thompson wants to collect data about his students' reading habits. He wrote this research question: 'How much do my students like reading books?' What is the main problem with this research question for collecting numerical data?
20. A bakery sells cupcakes in boxes. Each box holds exactly 6 cupcakes. On Monday, they sold 8 boxes. On Tuesday, they sold enough cupcakes to fill 5 more boxes, but 2 cupcakes were damaged and couldn't be sold. How many cupcakes did the bakery actually sell over both days?

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