Two-Digit Addition

Mental Math

100

10 + 10 = _____

20

200

34 + 10 = _____

44

300

68 + 20 = _____

88

400

30 + 45 = _____

75

500

8 + 24 + 12 = _____

44

Place Value Blocks

100

37 + 21 = _____

58

200

64 + 12 = _____

76

300

57 + 34 = _____

91

400

68 + 41 = _____

101

500

83 + 58 = _____

141

Decomposing

100

65 + 24 = _____

89

200

42 + 25 = _____

67

300

74 + 42 = _____

116

400

54 + 88 = _____

142

500

75 + 97 = _____

172

Number Line

100

15 + 33 = _____

48

200

68 + 30 = _____

98

300

61 + 48 = _____

109

400

74 + 29 = _____

103

500

46 + 48 = _____

94

Any Strategy

100

35 + 42 = _____

77

200

16 + 37 = _____

53

300

53 + 54 = _____

107

400

75 + 48 = _____

123

500

58 + 58 = _____

116