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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