Adding Ones
Adding Tens
Adding Tens and Ones
Subtracting Ones
100

3+5

8

100

10 + 10

20

100

1 Tens + 1 Ones

11

100

24 - 4

20

200

8+3

11

200

1 Tens + 2 Tens

3 Tens

200

2 Tens + 5 ones

25

200

31 - 3

28

300

10 + 5

15

300

4 Tens + 3 Tens

7 Tens

300

5 Tens + 7 ones

57

300

45 - 7

38

400

17 + 6

24

400

50 + 2 Tens

70

400

6 Tens + 1 Tens + 3 Ones

73

400

78 - 9

69

500

56 + 8

64

500

20 + 30 + 40

90

500

3 Tens + 2 Ones + 5 Tens + 1 Tens

92

500

88 - 12

76

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