题目内容
【题目】用简便方法计算.
0.25×6.4÷0.16
17.6×5.5+5.5×2.4
【答案】①10②110
【解析】
解:①0.25×6.4÷0.16
=0.25×(4×1.6)÷0.16
=(0.25×4)×1.6÷0.16
=1×1.6÷0.16
=10
②17.6×5.5+5.5×2.4
=(17.6+2.4)×5.5
=20×5.5
=110
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题目内容
【题目】用简便方法计算.
0.25×6.4÷0.16
17.6×5.5+5.5×2.4
【答案】①10②110
【解析】
解:①0.25×6.4÷0.16
=0.25×(4×1.6)÷0.16
=(0.25×4)×1.6÷0.16
=1×1.6÷0.16
=10
②17.6×5.5+5.5×2.4
=(17.6+2.4)×5.5
=20×5.5
=110