Quick Subtraction
Word Problems
Regroup or Not?
Show Your Work
Explain Your Thinking
100
What is the difference of 56 – 13?
The answer is 43.
100
Mrs. Dillon has 65 stickers. She gives away 27. How many stickers are not given away?
There are 38 stickers left.
100
Would you regroup to solve 42 – 0? Why or why not?
No, you don't because there are enough ones to subtract as is.
100
Solve 35 – 14 using a drawing or number line.
The answer is 21 but you have to show the work with a # line to get it correct!
100
Explain how you know 93 – 0 = 93.
When you subtract zero, you aren't taking away anything, so the number stays the same.
200
Find 42 – 20.
The answer is 22.
200
A pet store has 46 birds and 38 hamsters. 9 animals are sold. How many animals are not sold?
75 animals are not sold.
200
Would you regroup to solve 56 – 23?
No, you don't have to regroup because you have enough ones.
200
Solve 68 – 24 and explain why your strategy works. You can use any strategy.
The answer is 44. You must show your work to get the credit.
200
Explain how regrouping helps with 56 – 27. You also will solve.
You need to regroup because you don't have enough ones.
300
What is the difference of 68 - 29?
The answer is 39.
300
Hunter buys 72 baseball cards. He gives 26 cards to a friend. How many cards does Hunter have now?
He has 46 cards left.
300
Would you regroup to solve 61 – 28?
Yes, you would need to regroup. You would need to take one of the tens and break them into ones to have enough.
300
Solve 72 – 26 using a bar diagram. You can solve any way you want but you must also show a bar diagram.
300
Explain why 35 – 18 is close to 35 – 20. Then, solve.
It is only 2 away from the answer so you can use compensation to solve.
35-18=
35-20= 15
18+2=20
15+2= 17
The answer is 17.
400
Find 35 – 18 using any strategy.
The answer is 17.
400
Alivia has 78 crayons. Joey has 34 crayons. How many fewer crayons does Joey have than Alivia?
He has 44 crayons less than Alivia.
400
Would you regroup to solve 74 – 39?
Yes, you would need to regroup. You would need to take one of the tens and break them into ones to have enough.
400
Use break apart to solve for: Evie has 88 crayons. Owen has 29 crayons. How many more does Evie have?
29 broken into 20, 8, 1
88-20= 68
68-8=60
60-1=59
She has 59 more crayons.
400
Explain how a bar diagram helps solve word problems.
You can set the problem up on the bar diagram to see whether you know the parts or the whole and therefore know if you need to subtract or add.
500
Find 74 – 39.
The answer is 35.
500
Delaney has 59 pencils. Jordan has 83 pencils. Who has more, and by how many?
Jordan has more. He has 24 more.
500
Which of these need regrouping?
Solve all of the problems as well.
52-12=
76-49=
99-26=
52-12= 40
76-49= 27
99-26= 73
500
Solve 61 – 28 two different ways. You can use any strategy but you need to show your work.
33 is the answer. In order to get the points, you have to show 2 different ways to solve.
500
Explain why your strategy works for 98 – 24. Use any strategy to solve and then explain.
The answer is 74. You have to explain to get the points.