明天交卷啦,额,不要做错的哦,我的悬赏是10,可以加.

题目

明天交卷啦,额,不要做错的哦,我的悬赏是10,可以加.
8.5除以0.5+1.5×2？怎么简算
4.78×4+5.22除以0.25+5.22+0.25简算
5.23除以0.25+4.77×4简算
（6.4+3.2）除以8简算
63.2×0.1+6.32×9简算

答案

8.5÷0.5+1.5×2
=8.5×2+1.5×2
=2×(8.5+1.5)
=2×10
=20
4.78×4+5.22÷0.25+5.22+0.25
=4.78×4+5.22×4+5.22+0.25
=4×(4.78+5.22)+5.22+0.25
=40+5.22+0.25
=45.47
5.23÷0.25+4.77×4
=5.23×4+4.77×4
=4×(4.77+5.23)
=4×10=40
（6.4+3.2）÷8
=6.4÷8+3.2÷8
=0.8+0.4
=1.2
63.2×0.1+6.32×9
=6.32×1+6.32×9
=6.32×(1+9)
=6.32×10
=63.2
好久没做过了呢