Show:
Adding by 10s
Subtracting by 10s
100s chart addition
100s chart subtraction
100

30 + 10 = 

40


100

70 - 10 = 

60

100

23 + 12 = 

35

100

34 - 11 = 

23

200

57 + 10 = 

67


200

52 - 10 = 

42

200

72 + 26 =

98

200

68 - 42 = 

26

300

88 + 10 = 

98


300

84 - 10 = 

74

300

56 + 34 =

90

300

92 - 52 = 

40

400

95 + 10

105

400

100 - 10 = 

90

400

48 + 52 = 

100

400

54 - 46 = 

8

500

175 + 10 = 

185

500

150 - 10 = 

140

500

79 + 22 =  

101

500

100 - 25 = 

75