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Addition
Find the difference
100

29

30

100

The rug

meter stick

100

24-9

15

100

23+9

32

100

Find the difference between 21 and 19

3

200

36

40

200

A crayon

10 cm ruler

200

35-7

28

200

38+6

44

200

Find the difference between 45 and 39

6

300

75

80

300

A water bottle

measuring tape

300

63-7

56

300

65+9

74

300

Find the difference between 58 and 49

9

400

81

90

400

The height of the classroom

meter stick

400

72-18

54

400

77+16

93

400

Find the difference between 72 and 58

14

500

92

100

500

A squishmallow

measuring tape

500

98-25

73

500

68+29

97

500

Find the difference between 98 and 73

25