题目内容

【题目】计算下面各题,能用简便算法的要用简便方法计算.

0.25×7×4

1.23×9.4+0.77×9.4

(16.8+1.47)÷0.7

0.01×(1.8+4.2÷0.15)

【答案】7;18.8;26.1;0.298

【解析】

(1)0.25×7×4

=0.25×4×7

=1×7

=7

(2)1.23×9.4+0.77×9.4

=(1.23+0.77)×9.4

=2×9.4

=18.8

(3)(16.8+1.47)÷0.7

=18.27÷0.7

=26.1

(4)0.01×(1.8+4.2÷0.15)

=0.01×(1.8+28)

=0.01×29.8

=0.298

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网