- A rule states that the second number must be 5 less than the first number. Which pair follows this rule?
Answer: First: 15, Second: 10
The rule is to subtract 5 from the first number to find the second. Let's check each option. A: 5 - 5 = 0, not 10. This shows adding 5. B: 12 - 5 = 7, not 6. C: 15 - 5 = 10. This is correct. D: 9 - 5 = 4, not 5.
- In a toy box, the number of red blocks is always double the number of blue blocks. Which toy box follows this rule?
Answer: 4 blue blocks and 8 red blocks
The rule is that the number of red blocks is two times the number of blue blocks. Let's check the choices. A: Double 3 is 6, not 5. B: Double 2 is 4, not 3. C: Double 4 is 8. This is correct. D: Double 6 is 12, not 3. This reverses the rule.
- A magic box doubles any number you put into it. Which choice shows a number that went in and the correct number that came out?
Answer: In: 6, Out: 12
The rule is to double the input number, which means multiplying by 2. Let's check the choices. A: Double 5 is 10, not 7. This shows adding 2. B: Double 6 is 12. This is correct. C: Double 8 is 16, not 4. This shows halving. D: Double 10 is 20, not 10.
At a park, the number of dogs is always 4 less than the number of people.
Which group of people and dogs could be at the park? Answer: 10 people and 6 dogs
The rule is that the number of dogs is the number of people minus 4. Let's check the options. A: 8 - 4 = 4, not 12. This adds 4. B: 10 - 4 = 6. This is correct. C: 5 - 4 = 1, not 4. D: 4 - 4 = 0, not 8.
- The rule is: Take a number and subtract 1. Which pair of numbers follows this rule?
Answer: First: 9, Second: 8
The rule is to subtract 1 from the first number to get the second. Let's test the choices. A: 9 - 1 = 8. This is correct. B: 8 - 1 = 7, not 9. This shows adding 1. C: 7 - 1 = 6, not 7. D: 6 - 1 = 5, not 4.
- The rule is to add 6. Which number pair follows this rule?
Answer: First: 3, Second: 9
The rule is to add 6 to the first number. Let's check the options. A: 6 + 6 = 12, not 6. B: 3 + 6 = 9. This is correct. C: 10 + 6 = 16, not 4. This shows subtraction. D: 8 + 6 = 14, not 15.
- The rule is that the second number in a pair is 2 more than the first number. Which pair of numbers follows this rule?
Answer: First: 4, Second: 6
The rule is to add 2 to the first number to get the second. Let's check the choices. A: 3 + 2 is 5, not 3. B: 4 + 2 is 6. This is correct. C: 5 + 2 is 7, not 2. D: 6 + 2 is 8, not 7.
- The rule for a number pattern is 'add 10'. Which pair of numbers fits this rule?
Answer: First: 10, Second: 20
The rule is to add 10 to the first number to get the second. Let's test the choices. A: 5 + 10 = 15, not 10. B: 10 + 10 = 20, not 10. C: 10 + 10 = 20. This is correct. D: 20 + 10 = 30, not 10. This shows subtraction.
Juan has some toy cars. His friend Ali has exactly 1 more car than Juan.
Which of these could be the number of cars they each have? Answer: Juan has 9 cars, Ali has 10 cars
The rule is that Ali's number of cars is Juan's number plus 1. Let's check the options. A: 7 + 1 = 8, not 6. This shows subtraction. B: 5 + 1 = 6, not 5. C: 8 + 1 = 9, not 10. D: 9 + 1 = 10. This is correct.
On a farm, there is 1 pig for every 3 chickens.
Which group of animals could be on this farm? Answer: 2 pigs and 6 chickens
The rule is that the number of chickens is 3 times the number of pigs. Let's check the options. A: 3 times 2 is 6, not 5. B: 3 times 3 is 9, not 6. C: 3 times 4 is 12, not 1. D: 3 times 2 is 6. This is correct.
Chen has a bag of apples and a bag of oranges. He always has 2 fewer oranges than apples.
Which bags of fruit could be Chen's? Answer: 8 apples and 6 oranges
The rule is that the number of oranges is the number of apples minus 2. Let's check the options. A: 7 - 2 = 5, not 9. B: 8 - 2 = 6. This is correct. C: 5 - 2 = 3, not 2. D: 10 - 2 = 8, not 12. Both A and D show adding 2.
- Use the bar graph. If □−2=Berries sold on Tuesday, which choice fits the graph?
Answer: 7
The Tuesday bar shows 5 baskets. To make \square - 2 = 5, \square must be 7. 5 gives 3, 6 gives 4, 8 gives 6; only 7 works.
- A machine has a rule. The number that comes out is always 3 less than the number that goes in. Which choice shows a number going in and the correct number coming out?
Answer: In: 8, Out: 5
The rule is to subtract 3 from the input number. Let's check each choice. A: 8 - 3 = 5. This is correct. B: 7 - 3 = 4, not 10. C: 6 - 3 = 3, not 9. D: 5 - 3 = 2, not 8.
- A number relationship is 'take the first number and subtract 2'. Which pair of numbers shows this relationship?
Answer: First: 9, Second: 7
The rule is to subtract 2 from the first number. Let's check the options. A: 12 - 2 = 10, not 2. B: 11 - 2 = 9, not 13. C: 10 - 2 = 8, not 12. Both B and C show adding 2. D: 9 - 2 = 7. This is correct.
Sara has a collection of shells. The number of big shells she has is 5 more than the number of small shells.
Which of these could be Sara's shell collection? Answer: 6 small shells and 11 big shells
The rule is that the number of big shells equals the number of small shells plus 5. Let's check each option. A: 6 + 5 = 11. This matches the rule. B: 5 + 5 = 10, not 5. C: 10 + 5 = 15, not 5. This shows subtraction. D: 4 + 5 = 9, not 8.
In a game, your score is the number of gold coins you find, plus 3 bonus points.
Which choice shows the correct number of gold coins and the final score? Answer: 6 gold coins, score of 9
The rule is to add 3 to the number of gold coins to get the score. Let's check the options. A: 5 + 3 = 8, not 7. B: 4 + 3 = 7, not 4. C: 6 + 3 = 9. This is correct. D: 3 + 3 = 6, not 0.
In a classroom, the number of chairs is always the same as the number of desks.
Which classroom follows this rule? Answer: 15 desks and 15 chairs
The rule is that the number of chairs and desks must be equal. Let's check the choices. A: 10 is not equal to 12. B: 15 is equal to 15. This is correct. C: 14 is not equal to 13. D: 20 is not equal to 10.
