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Adding to multiple of 10
Add/Subtract like units
Make a ten to add within 20
Make a to add within 100
Subtract single digit numbers
100

10+ 3 =

13

100

24 + 5 =

29

100

8 + 8 =

16

100

9 + 3 =

12

100

30 - 9 = 

21

200

30 + 4 =

34

200

78 - 3 =

75

200

9 + 5 =

14

200

18 + 4 =

22

200

20 - 8 =

12

300

60 + 5 =

65

300

24 + 50 =

74

300

7 + 6 =

13

300

37 + 5 =

42

300

40 - 7 =

33

400

70 + 6 =

76

400

78 - 30 = 

48

400

 9 + 8 =

17

400

6 + 68=

74

400

50 - 6 =

44

500

__ = 90+8

98

500

50 - 30 =

20

500

9 + 9 = 

18

500

8 + 78 = 

86

500

90 - 5 =

85