Missing Numbers
Adding Tens
Subtracting Tens
Adding Two-Digits
Subtracting Two-Digits
100

10+__=100

90

100

10+70=

80

100

40-40=

0

100

53+26=

79

100

28-14=

14

200

___+30=80

50

200

60+40=

100

200

90-70=

20

200

34+13=

47

200

55-32=

23

300

15+____=21

6

300

80+30=

110

300

100-20=

80

300

27+54=

81

300

80-18=

72

400

33+___= 59

26

400

10+90=

100

400

100-70=

30

400

65+16=

81

400

58-19=

39

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