简便计算题:

1)6.9+4.8+3.1

=(6.9+3.1) +4.8

=10+4.8

=14.8

2)4.02+5.4+0.98

=(4.02+0.98)+5.4

=5+5.4

=10.4

101×0.87-0.91×87

=0.87*(101-91)

=0.87*10

=8.7

10.7×16.1-15.1×10.7

=10.7*(16.1-15.1)

=10.7*1

=10.7

12.5×0.96×0.8

=12.5*0.8*0.96

=10*0.96

=9.6

答:以上是五年级简便运算题目和答案 。

五年级期末考试答案