问题补充说明:不用写答案,不是应用题,要是分数,最好带过程
0.4×125×25×0.8
=(0.4×25)×(125×0.8)
=10×100=1000
1.2来自4×8.3+8.3×映限农排1.76
=8.3×(1.2副束边滑先4+1.76)
=8.3×3=24.9
9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999
14.8×6停蒸元写城请微.3-6.3×6.5+8.360问答3×3.7
=(14.8-6.5严)×6.3+8.3×3.7
=8.3×6.3+8.3×3.7
8.3×(6.3+3.7)
=8.3×10
=83
1.24+0.78+8.76
=(1.24+8.76)+0.78
=金校于答河里10+0.78
=10.78
933-157-43
=933-(157+43)
=933-200
=733
4821-998
=根报现收乡强创陆判4821-1000+2
=3823
I32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000
百分数的互化
百分数与小数的互化
(1)年审医织元百分数化小数:去掉百分号,小数怎为罪点左移两位。如:75%可化为0.75。
(2)小数化百分数:加上百分号,小数点右移两位。如:龙数件些0.62可化为62%。