(1)原式
=25×4/5+4×4/5+1×4/5
=(25+4+1)×4/5
=30×4/5
=24
(2)原式
=6.3×0.7+2.7×0.7+1×0.7
=(6.3+2.7+1)×0.7
=10×0.7
=7
25除4分之5+5分之4÷4分之1+5分之1×4简便计算
25除4分之5+5分之4÷4分之1+5分之1×4简便计算
6.3×10分之7+2.7÷7分之10+0.7简便计算,30分钟以内
6.3×10分之7+2.7÷7分之10+0.7简便计算,30分钟以内
数学人气:846 ℃时间:2020-02-05 16:42:37
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