用递等式计算(能简算的要简算)8÷1.5-0.4×0.7 5700÷25×4105×(17+...
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发布时间:2024-09-29 14:06
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热心网友
时间:2024-10-02 02:35
(1)8÷1.5-0.4×0.7,
=8015-0.28,
=163-725,
=37975;
(2)5700÷25×4,
=228×4,
=912;
(3)105×(17+23+15),
=105×17+105×23+105×15,
=15+70+21,
=106;
(4)[1-(14+38)]÷14,
=[1-58]÷14,
=38÷14,
=32.
热心网友
时间:2024-10-02 02:37
(1)8÷1.5-0.4×0.7,
=8015-0.28,
=163-725,
=37975;
(2)5700÷25×4,
=228×4,
=912;
(3)105×(17+23+15),
=105×17+105×23+105×15,
=15+70+21,
=106;
(4)[1-(14+38)]÷14,
=[1-58]÷14,
=38÷14,
=32.