问题
解答题
计算下面各题,能简便的要用简便方法计算.
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答案
(1)1.3+0.94+0.06+7.7,
=(1.3+7.7)+(0.94+0.06),
=9+1,
=10;
(2)6.27÷0.3+3,
=20.9+3,
=23.9;
(3)12.5×0.48×0.8,
=(12.5×0.8)×0.48,
=10×0.48,
=4.8;
(4)5.2×[(1.3+2.1)÷0.2],
=5.2×[3.4÷0.2],
=5.2×17,
=88.4.