十题小学四年级下册小数简便运算题,快!

2024-12-17 08:35:20
推荐回答(2个)
回答1:

3.1x4.2=13.02
4.7x6=28.2
6.2x9=55.8
7x1.1=7.7
1.6x5=8
4.9x1.1=5.39
9x1.1=9.9
4x5.5=22
7.1x7=49.7
5.1x5=25.5

回答2:

看百度文库
http://wenku.baidu.com/view/511b0cadd1f34693daef3ef9.html

http://wenku.baidu.com/view/b148909b51e79b8968022645.html