简便计算,(能简便的要简便) (17.2-0.4)÷0.4 4.25-4.25×0.8 0.125×0.07×0.8 0
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简便计算,(能简便的要简便) (17.2-0.4)÷0.4 4.25-4.25×0.8 0.125×0.07×0.8 0.84÷0.03-1.5
(0.24+X)×0.8=3.2 (解方程)
简便计算也要答 (17.2-0.4)÷0.4 4.25-4.25×0.8 0.125×0.07×0.8 0.84÷0.03-1.5
(0.24+X)×0.8=3.2 (解方程)
简便计算也要答 (17.2-0.4)÷0.4 4.25-4.25×0.8 0.125×0.07×0.8 0.84÷0.03-1.5
1.0.24+x=3.2/0.8
0.24+x=4
x=4-0.24=3.76
2.(17.2-0.4)÷0.4
=17.2÷0.4-0.4÷0.4
=43-1
=42
3.4.25-4.25×0.8
4.25×(1-0.8)
4.25×0.2
=0.85
4.0.125×0.07×0.8
=0.125×0.8×0.07
=0.1×0.07
=0.007
5.0.84÷0.03-1.5
=28-1.5
=26.5
0.24+x=4
x=4-0.24=3.76
2.(17.2-0.4)÷0.4
=17.2÷0.4-0.4÷0.4
=43-1
=42
3.4.25-4.25×0.8
4.25×(1-0.8)
4.25×0.2
=0.85
4.0.125×0.07×0.8
=0.125×0.8×0.07
=0.1×0.07
=0.007
5.0.84÷0.03-1.5
=28-1.5
=26.5
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