One-digit Subtraction
Two-digit Subtraction
Check Subtraction
Word Problems
Do I need to regroup?
100

10-3=

7

100

41-12=

29

100

51-36=

15
36+15=51

100

There are 54 dirty cups. Amy

washes 28. How many cups are left to wash?

16 cups

100

70-20=

50
no regrouping


200

8-3=

5

200

68-13=

55

200

65-27=

38
27+38=65

200

Gerri has 71 tickets to sell for

a raffle. She sells 45. How many raffle tickets are left?

26 tickets

200

33-21=

12
no regrouping

300

9-6=

3

300

27-19=

8

300

70-11=

59
59+11=70



300

The baseball team had 81 games in the season.
They won 43 games. How many games did they lose?

38 games


300

91-79=

12
Yes, I need to regroup.

400

20-13=

7

400

76-39=

35

400

37-17=

20
20+17=37

400

The lunchroom had 61 chocolate milk cartons. There were 32 sold. How many chocolate milk cartons are left?

29 milk cartons 

400

37-27=

10
no regrouping

500

20-16=

4

500

30-12=

18

500

65-27=

38
38+27=65

500

Before the post office opened on Monday morning, there were 80 packs of stamps. At the end of the day, there were 53 packs of stamps left. How many packs of stamps were sold on Monday?

27 stamps 

500

56-27=

29
Yes, I need to regroup.