题目内容
【题目】递等式计算,能简则简:
(1)1.25×6.4×0.25
(2)14.75+5.25÷0.5+9.5
(3)[9.7﹣9.7×(9.7﹣9.7)]÷0.97.
【答案】(1)解: 1.25×6.4×0.25
=1.25×8×0.8×0.25
=(1.25×8)×(0.8×0.25)
=10×0.2
=2
(2)解:14.75+5.25÷0.5+9.5
=14.75+10.5+9.5
=14.75+(10.5+9.5)
=14.75+20
=34.75
(3)解:[9.7﹣9.7×(9.7﹣9.7)]÷0.97
=[9.7﹣9.7×0]÷0.97
=9.7÷0.97
=10
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