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0.4x(3.2一0.8)÷0.15简便计算
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0.4x(3.2一0.8)÷0.15简便计算
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答案和解析
0.4×(3.2一0.8)÷0.15
=0.4×2.4÷0.15
=0.96÷0.15
=(0.96×100)÷(0.15×100)
=96÷15
=(96÷3)÷(15÷3)
=32÷5
=(32×2)÷(5×2)
=64÷10
=6.4
=0.4×2.4÷0.15
=0.96÷0.15
=(0.96×100)÷(0.15×100)
=96÷15
=(96÷3)÷(15÷3)
=32÷5
=(32×2)÷(5×2)
=64÷10
=6.4
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