Add ones
Subtract ones
Add tens
Subtract tens
Word problems
100

3 + 3

6

100

7 - 2

5

100

20 + 10

30

100

40 - 10

30

100

Lisa had $6, then found $3 more. How much now? 

$9

200

7 + 8

15

200

10 - 8

2

200

15 + 10 

25

200

50 - 30

20

200

Andy had $28. He spent $5. How much is left? 

$23

300

30 + 7

37

300

13 - 7

6

300

20 + 20

40

300

90 - 80

10

300

Bob found 16 shells. Sue found 3 more than Bob. How many does Sue have?

19 shells

400

15 + 7

22

400

78 - 3

75

400

31 + 10

41

400

51 - 20

31

400

Carla has 40 paper clips. She gives 6 away. How many now?

34 paper clips

500

35 + 4

39

500

83 - 9

74

500

30 + 30 

60

500

72 - 30

42

500

Barry has a box of 64 crayons, but he can't find 5 of them. How many are in his box?

59 crayons

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