Addition +1
Subtraction -1
Addition +10
Subtraction -10
Teen Numbers
100

12 +1 

13

100

19- 1

18

100

40 +10

50

100
30 - 10

20

100

10 + 7

17

200

54 +1 

55

200

22-1

21

200

55 +10 

65

200

34 - 10

24

200

10 + 3

13

300

65 + 1

66

300

76-1

75

300

76 +10 

86

300

16- 10

300

10 + 5

15

400

105 +1 

106

400

89- 1

88

400

100 +10

110

400

87- 10

77

400

10 + 8

18

500

119 +1

120

500

100-1

99

500

119 +10 

129

500

104 -10

94

500

10 + 9

19

M
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