簡算4分之3-(7分之5-0.25)
4分之3-(7分之5-0.25)
=3/4-7/5+0.25
=0.75+0.25-5/7
=1-5/7
=2/7
如果明白,並且解决了你的問題,
4點25-3又6分之5-(2又6分之1-1又4分之3)簡算
4.25-23/6-(13/6-7/4)
=51/12-46/12-26/12+21/12
=0
用簡便算灋計算1.7÷0.25,
1.7÷0.25
=(1.7×4)÷(0.25×4)
=6.8
7/8-(7/8-3/4)用最簡便的方法計算
7/8-(7/8-3/4)
=7/8-7/8+3/4
=3/4