snrg.net
当前位置:首页 >> 3.09减去1.15与 >>

3.09减去1.15与

1.15 × 0.07 = 0.0805≈0.08 3.09 × 0.6 = 1.854≈1.85 竖式见图:

(1)设x=0.8787...,则100x=87+0.8787..; 100x=87+x ,x=87/99 ,所以0.8787..=87/99 同理0.7878...=78/99 87/99-78/99=10/99 (2)1.1919..=1+0.1919..=1+19/99 ,0.1515..=15/99 2.77..=2+7/9 3.0909...=3+0.0909...=3+9/99 (1+19/99)+15/99+(2+7/9...

1.5+2.7=4.2 15.4-2.4=13 25×6=150 1-0.8=0.2 0.032×100=3.2 78÷3=26 5.1+3.09=8.19 5-4.12=0.88 36÷1000=0.036 4.8+6.2=11 25×7×4=700 125×8+50=1050

网站首页 | 网站地图
All rights reserved Powered by www.snrg.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com