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(6.4+0.32)÷0.8的简便运算怎么做,求解答

(6.4+0.32)÷0.8 =6.4÷0.8+0.32÷0.8 =64÷8+3.2÷8 =8+0.

(6.4+32.8)÷0.8简便 搜索资料 我来答 分享 微信扫一扫 新

原式=2+0.24×(6.4÷0.32) =2+0.24×20 =2

6.4-0.32x=2 0.32x=6.4-2 x=4.4÷0.32 x=13.75 或者x

(1)2.5×45+6.5×80%+0.8,=0.8×(2.5+6.5+1),=0.8×10,=8;

(1)47.5-(0.6+6.4÷0.32)=47.5-(0.6+20)=47.5-20.6=26.

3.2×1.5 6.4÷0.32用简便方法 3.2×1.5 6.4÷0.32 =4.8+20

3.21.5+6.4÷0 .32简便方法 3.21.5+6.4÷0 .32 =4.8+50

47.5-(0.6+6.4/0.32) =47.5-20.6=26.9

=32x(-0.1x35.5-0.2x23.1-0.01x183) =32x(-3.55-4.62

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