问题
解答题
选择合理的方法计算:
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答案
①4.25×0.125×8,
=4.25×(0.125×8),
=4.25×1,
=4.25;
②0.65×201,
=0.65×(200+1),
=0.65×200+0.65×1,
=130+0.65,
=130.65;
③4.8×0.25,
=1.2×(4×0.25),
=1.2×1,
=1.2;
④1.2×2.5+0.8×2.5,
=(1.2+0.8)×2.5,
=2×2.5,
=5.