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 =42,
28+12=40
40+2=42
2) 76 + 9 =85,
76+4=80
80+5=85
3) 37 + 15=52,
37+13=50
50+2=52
4) 46 + 17 =63,
46+14=60
60+3=63
5) 68 + 24=92,
68+22=90
90+2=92
6) 48 + 37 =85,
48+32=80
80+5=85
7) 29 + 62 =91,
29+61=90
90+1=91
8) 18 + 63 =81,
18+62=80
80+1=81
9) 55 + 17 =72,
55+15=70
70+2=72
10) 29 + 54,
29+51=80
80+3=83
(11) 38 + 17=55,
38+12=50
50+5=55
(12) 37 + 54=91,
37+53=90
90+1=91
13) 69 + 73=142,
69+71=140
140+2=142
(14) 78 + 45=123,
78+42=120
120+3=123
(15) 27 + 57=84,
27+53=80
80+4=84
16) 19 + 64=83,
19+61=80
80+3=83
(17) 27 + 46=73,
24+46=70
70+3=73
(18) 38 + 75=113,
38+72=110
110+3=113
19) 47 + 86=133,
47+83=130
130+3=133
(20) 34 + 68=102
34+66=100
100+2=102
(21) 58 + 86=144,
58+82=140
140+4=144
22) 74 + 38=112,
74+36=110
110+2=112
(23) 95 + 29=124,
95+25=120
120+4=124
(24) 88 + 36=124
88+32=120
120+4=124
