Estimation Addition
Estimate:
52+16 =
50+20=70
47+30=
77
53+6=
59
12+9=
21
75+8=
83
Estimate:
38+27=
40+30=70
26+70=
96
21+4=
25
24+8=
32
89+8=
97
Estimate:
42+49=
40+50=90
40+25=
65
35+3=
38
37+7=
44
56+5=
61
Estimate:
13+67=
10+70=80
18+50=
68
72+6=
78
48+3=
51
88+8=
96
Estimate:
35+15=
40+20=60
19+20=
39
91+4=
95
57+6=
63
79+5=
84