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Addition
Building Numbers
Subtraction
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100

Solve 14+21=___

35

100
How many ones are in the number 99?

9

100

Solve 28-14=___

14

100

23____23

=
100

10,20,30,__,__,__,__


40,50,60,70

200

Solve 19+32=____

51

200

How many 10s are in 66

6

200

Solve 45-12=___

33

200

22______19

>

200

24,34,54,__,__,__

64,74,84

300

Solve 56+10=____

66

300

How many ones are in the number 98

8

300

Solve 75-43=___

32

300

65___65

=

300

89,88,87,86,__,__,__,__

85,84,83,82

400

Solve  23+25=____

48

400

I have 7 sticks of 10 and 2 ones, what number am I?

72

400

Solve 86-33=____

53

400

78____99

<
400

100,99,98,97,__,__,__,__

96,95,94,93

500

  Solve   45+33=_____

78

500

How many 10s are in the number 120?

12

500

Solve 98-23=___

75

500

120  ___    96

>

500

60,70,80,__,___,__,__

90,100,110,120