题目内容

怎样简便怎样算
58.7+24.79-18
7
10

6.8÷0.125÷0.8
23×
7
8
+57÷1
1
7

2.8×10.1.
①58.7+24.79-18
7
10

=58.7-18.7+24.79,
=40+24.79,
=64.79;

②6.8÷0.125÷0.8,
=6.8÷(0.125×0.8),
=6.8÷0.1,
=68;

③23×
7
8
+57÷1
1
7

=(23+57)×
7
8

=80×
7
8

=70;

④2.8×10.1,
=2.8×(10+0.1),
=2.8×10+2.8×0.1,
=28+0.28,
=28.28.
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