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× = ÷6= ÷ =
3.5÷ = 12.5%÷ = 3×(1+20%)=
× × ÷ ×9
20×10%20÷10% ÷
×0.32= ÷3= 1- × =
5÷ = ÷ = × ×0=
× = 6×45%= ÷ ÷ =
年龄
0
1
2
3
4
5
6
7
8
9
10
身高/cm
50
74
85
93
101
108
115
120
130
135
141
20×20%= 1-75%= 12.5%÷ = 0.6+40%=
52×3.14= 3.14×32= 2×3×3.14= ÷2÷ =
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