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.

选择题
问答题 简答题