题目内容
【题目】用递等式计算,能简算的要简算。
(1)28.7÷7×4.5 (2)9.6÷(15.4-12.2)
(3)4.6×1.2+2.8×4.6 (4)93÷3.1÷0.3
【答案】18.45;3;18.4;100;
【解析】
(1)28.7÷7×4.5
=4.1×4.5
=18.45;
(2)9.6÷(15.4-12.2)
=9.6÷3.2
=3
(3)4.6×1.2+2.8×4.6
=4.6×(1.2+2.8)
=4.6×4
=18.4
(4)93÷3.1÷0.3
=93÷(3.1×0.3)
=93÷0.93
=100
练习册系列答案
相关题目