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.
1. Which number line helps you solve this word problem?
74 birds were sitting on a tree. 12 flew away. How many birds are left on the tree?
Yes! This number line begins jumping at 74. It jumps 12 to the left and lands on 62.
The correct number line should begin jumping at 74. It should jump 12 to the left and land on 62 because 74 - 12 = 62.
The correct number line should begin jumping at 74. It should jump 12 to the left and land on 62 because 74 - 12 = 62.
2. Which subtraction sentence matches this word problem and number line?
Barrett has 65 red and yellow crayons. 30 of the crayons are red. How many are yellow?
- 30 - 10 = 20
- 77 - 11 = 66
- 65 - 30 = 35
The subtraction sentence is 65 - 30 = 35. We begin jumping from 65 and jump 30 to the left.
The subtraction sentence is 65 - 30 = 35. We begin jumping from 65 and jump 30 to the left.
The subtraction sentence is 65 - 30 = 35. We begin jumping from 65 and jump 30 to the left.
3. What are the whole and the part in this word problem?
32 students were riding on the bus. 24 students got off the bus. How many students are left on the bus?
___ - ___ = ___
- 74 - 16 = ?
- 32 - 24 = ?
- 14 - 10 = ?
The whole is 32, and the part is 24.
Correct! The whole is 32, and the part is 24.
The whole is 32, and the part is 24.
4. How many ladybugs does Nora have left?
Nora had 96 ladybugs. She put 17 on a leaf.
- 42
- 79
- 81
The last jump lands on 79, so it is the difference.
You are right! The last jump lands on 79, so it is the difference.
The last jump lands on 79, so it is the difference.
5. Which number line helps you solve this word problem?
Jim has 58 baseball cards, and Jill has 14 baseball cards. How many more baseball cards does Jim have than Jill?
The correct number line should begin jumping at 58. It should jump 14 to the left and land on 44 because 58 - 14 = 44.
The correct number line should begin jumping at 58. It should jump 14 to the left and land on 44 because 58 - 14 = 44.
Yes! This number line begins jumping at 58. It jumps 14 to the left and lands on 44.
6. Which subtraction sentence matches this word problem and number line?
There were 49 black and silver cars at the mall. If 22 of the cars were black, how many were silver?
- 49 - 22 = 27
- 22 - 10 = 12
- 96 - 36 = 60
The subtraction sentence is 49 - 22 = 27. We begin jumping from 49 and jump 22 to the left.
The subtraction sentence is 49 - 22 = 27. We begin jumping from 49 and jump 22 to the left.
The subtraction sentence is 49 - 22 = 27. We begin jumping from 49 and jump 22 to the left.
7. What are the whole and the part in this word problem?
Megan picked 27 strawberries. She ate 11. How many strawberries does Megan have left?
___ - ___ = ___
- 77 - 23 = ?
- 27 - 11 = ?
- 42 - 30 = ?
The whole is 27, and the part is 11.
Correct! The whole is 27, and the part is 11.
The whole is 27, and the part is 11.
8. How many balloons were left?
There were 81 balloons at a birthday party. 25 balloons flew away.
- 56
- 90
- 43
You are right! The last jump lands on 56, so it is the difference.
The last jump lands on 56, so it is the difference.
The last jump lands on 56, so it is the difference.
9. Which number line helps you solve this word problem?
Chris had 68 crayons. He gave 26 of them to Ada. How many crayons does Chris have left?
The correct number line should begin jumping at 68. It should jump 26 to the left and land on 42 because 68 - 26 = 42.
The correct number line should begin jumping at 68. It should jump 26 to the left and land on 42 because 68 - 26 = 42.
Yes! This number line begins jumping at 68. It jumps 26 to the left and lands on 42.
10. Which subtraction sentence matches this word problem and number line?
43 apples are in a basket. 15 apples are red, and the rest are green. How many green apples are in the basket?
- 23 - 12 = 11
- 43 - 15 = 28
- 59 - 34 = 25
The subtraction sentence is 43 - 15 = 28. We begin jumping from 43 and jump 15 to the left.
The subtraction sentence is 43 - 15 = 28. We begin jumping from 43 and jump 15 to the left.
The subtraction sentence is 43 - 15 = 28. We begin jumping from 43 and jump 15 to the left.
Summary
Questions answered correctly:
Questions answered incorrectly: