Show:
ADDITION FACTS
SUBTRACTION FACTS
2-DIGIT ADDITION
DOUBLES
100

11+ 9

20
100

17 - 9

8

100

24 + 19

43

100

12 + 12

24

200

19 + 8

27

200

16 - 7

9

200

36 + 42

78

200

14 + 14

28

300

28 + 9

37

300

18 - 9

9

300

46 + 54

100

300

16 + 16

32

400

33 + 7

40

400

27 - 8

19

400

89 + 63

152

400

18 + 18

36

500

48 + 6

54

500

38 - 9

29

500

99 + 75

174

500

19 + 19

38