问题
解答题
计算下面各题,能简算的要简算.
2.52×2.8+7.48×2.8 2.05÷0.82+37.6 69.6÷3.2÷2.5.
答案
(1)2.52×2.8+7.48×2.8,
=(2.52+7.48)×2.8,
=10×2.8,
=28;
(2)2.05÷0.82+37.6,
=2.5+37.6,
=40.1;
(3)69.6÷3.2÷2.5,
=69.6÷(3.2×2.5),
=69.6÷8,
=8.7.