问题
解答题
灵活计算下面各题.
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答案
(1)4.87×1.25×0.8,
=4.87×(1.25×0.8),
=4.87×1,
=4.87;
(2)(5.6-5.6×0.7)÷22.4,
=(1-0.7)×5.6÷22.4,
=0.3×5.6÷22.4,
=1.68÷22.4,
=0.075;
(3)3.7×9.9,
=3.7×(10-0.1),
=3.7×10-3.7×0.1,
=37-0.37,
=36.63;
(4)8.56×7.5+8.56×2.5,
=8.56×(7.5+2.5),
=8.56×10,
=85.6.