Follow Up
What to do
1)Use the strategy of splitting a number into parts to do these additions.
2) Do the problems in your head first.
3) Check you are correct by writing them down. Show them like the examples above.
1) 28 + 14 = 10 + 4, 28 + 10 = 38
38 + 4 = 42
(2) 76 + 9 = 4 + 5, 76 + 4 = 80
80 + 5 = 85
(3) 37 + 15 = 10 + 5, 37 + 10 = 47
47 + 5 = 52
4) 46 + 17 = 10 + 7, 46 + 10 = 56
56 + 7 = 63
(5) 68 + 24 = 20 + 4, 68 + 20 = 88
88 + 4 = 92
(6) 48 + 37 = 30 + 7, 48 + 30 = 78
78 + 7 = 85
(7) 29 + 62 = 60 + 2, 29 + 60 = 89
89 + 2 = 91
(8) 18 + 63 = 60 + 3, 18 + 60 = 78
78 + 3 = 81
(9) 55 + 17 = 10 + 7, 55 + 10 = 65
65 + 7 = 72
(10) 29 + 54 = 50 + 4, 29 + 50 = 79
79 + 4 = 83
(11) 38 + 17 = 10 + 7, 38 + 10 = 48
48 + 7 = 55
(12) 37 + 54 = 50 + 4, 37 + 50 = 87
87 + 4 = 91
( 13) 69 + 73 = 70 + 3, 69 + 70 = 139
139 + 3 = 142
(14) 78 + 45 = 40 + 5, 78 + 40 = 118
118 + 5 = 123
(15) 27 + 57 = 50 + 7, 27 + 50 = 77
77 + 7 = 84
(16) 19 + 64 = 60 + 4, 19 + 60 = 79
79 + 4 = 83
(17) 27 + 46 = 40 + 6, 27 + 40 = 67
67 + 6 = 73
(18) 38 + 75 = 70 + 5, 38 + 70 = 108
108 + 5=113
(19) 47 + 86 = 80 + 6, 47 + 80 = 127
127 + 6 = 133
(20) 34 + 68 = 60 + 8, 34 + 80 = 114
114 + 8 = 122
(21) 58 + 86 = 80 + 6, 58 + 80 138
138 + 6 = 142
(22) 74 + 38 = 30 + 8, 74 + 30 = 104
104 + 8 = 112
(23) 95 + 29 = 20 + 9, 95 + 20 = 115
115 + 9 = 124
(24) 88 + 36 = 30 + 6, 88 + 30 = 118
118 + 6 = 124
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