问题
解答题
1
|
答案
1
×3 4
+5 8
×62.5+0.625÷20，1 5
=1.75×0.625+0.2×62.5+0.625×0.05，
=1.75×0.625+20×0.625+0.625×0.05，
=（1.75+20+0.05）×0.625，
=21.8×0.625，
=13.625．
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1
|
1
×3 4
+5 8
×62.5+0.625÷20，1 5
=1.75×0.625+0.2×62.5+0.625×0.05，
=1.75×0.625+20×0.625+0.625×0.05，
=（1.75+20+0.05）×0.625，
=21.8×0.625，
=13.625．