Assess Yourself
How well do you understand the ideas in this lesson?
Goal:
Goal:
Show What You Know!
Are you ready to take this lesson's quiz? These questions will help you find out. Go back to the lesson if you do not know an answer.
What is the divisor in this division equation?
14 \({ \div }\) 7 = 2
- 14
- 2
- 9
- 7
Try again. 14 is the dividend.
No. The answer is called the quotient.
Try again. 9 is not the divisor.
Correct. The divisor tells the number of equal groups there are.
Here are 12 toy knights.
Which group below shows how you would put them into 3 equal groups?
Try again. This picture shows two groups of six.
No. This picture shows three groups of three.
Try again. This picture shows four groups of two.
Great! This shows 12 knights put into 3 equal groups.
Here are 15 castle cards.
Which group below shows how you would put them into 5 equal groups?
Try again. This shows three groups of five.
Good job. This shows 15 castle cards put into 5 equal groups.
Try again. This shows five groups of two.
No. This shows three groups of five.
Which group below represents this division problem?
10 \({ \div }\) 2 = 5
Try again. This represents a repeated subtrahend of 5, not 2.
Try again. This represents a repeated subtrahend of 4, not 2.
No. Watch out! There are too many knights in this picture.
Yes! The repeated subtrahend is 2. You end with five equal groups of 2.
How many times do we need to take away 7 from 28 to get 0?
- 3
- 4
- 1
- 2
Try again. If you subtract 7 only three times, you do not get to zero.
Great! Subtracting 7 four times equals 0.
Try again. If you subtract 7 one time, you do not get to zero.
No. If you subtract 7 two times, you do not get to zero.
How many times do we need to take away 3 from 30 to get 0?
- 7
- 9
- 10
- 11
Try again. If you subtract 3 only 7 times, you do not get to zero.
No. If you subtract 3 only 9 times, you do not get to zero.
Great! Subtracting 3 ten times equals 0.
No. If you subtract 3 eleven times, you do not get to zero.
Which expression below represents repeated subtraction for this division problem?
32 \({ \div }\) 8 = 4
- 32 – 8 – 8 – 8 – 8
- 32 – 4 – 4 – 4 – 4 – 4 – 4 – 4
- 2 – 8 – 8 – 8
- 32 – 4 – 4
Correct! Subtracting 8 from 32 four times equals 0.
No. 4 is not the number you should subtract.
No. If you subtract 8 only three times, you do not get 0.
Try again. 4 is not the number you should subtract.
Which expression below represents repeated subtraction for this division problem?
21 \({ \div }\) 7 = 3
- 21 – 3
- 21 – 7 – 7
- 21 – 7 – 7 – 7 = 0
- 21 – 3 – 3 – 3 – 3 – 3 – 3 – 3 = 0
Try again. 3 is not the number you should subtract in this problem.
No. If you subtract 7 two times, you do not get 0.
Good job! Subtracting 7 three times equals 0.
Try again. 3 is not the number you should subtract in this problem.
Read the problem below and solve.
There are 18 castle playing cards on the table. Ella wants to put them into 3 equal groups. How many playing cards will be in each group?
- 2
- 3
- 6
- 9
Try again. 2 is not a number in the word problem. The repeated subtrahend is the number of equal groups.
No. 18 – 3 – 3 – 3 does not equal 0.
Correct. There will be 3 equal groups of six because 18 – 6 – 6 – 6 = 0.
No. 9 is not a number in the word problem. The repeated subtrahend is the number of equal groups.
Read the problem below and solve.
There are 16 toy knights in a crate. Lexi wants to put them into equal groups of 4. What number should she repeatedly subtract?
- 3
- 4
- 2
- 6
No. The repeated subtrahend is the number of equal groups.
Good job! Subtracting 4 four times equals 0.
No. The repeated subtrahend is the number of equal groups.
Try again. The repeated subtrahend is the number of equal groups.
Summary
Questions answered correctly:
Questions answered incorrectly: