2.37*6.3/2.37*3.7 简便计算 2.5*1.25*0.32 3.8*10.1 2.4*0.8-4.48/2.8 2.6/【8.06/2-3.13】*1.4

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/26 09:39:37
2.37*6.3/2.37*3.7 简便计算 2.5*1.25*0.32 3.8*10.1 2.4*0.8-4.48/2.8 2.6/【8.06/2-3.13】*1.4
x]n@ǯK^.p\Ҥ J*hQ+*j9a8OWC (AbZҠ0ߤ޴x"ݷL]Do?aχ>= >v򶛣Ix +obK?EC0pM6UHGvAWZ9 y%!_%ц|-np 1ẋgNfnDQ.u wCl宑\FYXw(†*Cz8:v%=8t㮆#-dMPg=;(ޜA20;x9{w2Ebj4D۬^u~/V܏_Gg~FVF꟦o^Lj-ֺLi'B2ѽd2bS0iI !tcCh௾ >2"H$ mYG>2Pf9P"y_oJ𿐻)ST&T! ?l!`g+j a`#0s_ •v-}%n`v

2.37*6.3/2.37*3.7 简便计算 2.5*1.25*0.32 3.8*10.1 2.4*0.8-4.48/2.8 2.6/【8.06/2-3.13】*1.4
2.37*6.3/2.37*3.7 简便计算 2.5*1.25*0.32 3.8*10.1 2.4*0.8-4.48/2.8 2.6/【8.06/2-3.13】*1.4

2.37*6.3/2.37*3.7 简便计算 2.5*1.25*0.32 3.8*10.1 2.4*0.8-4.48/2.8 2.6/【8.06/2-3.13】*1.4
2.37*6.3/2.37*3.7
=(6.3/3.7)*(2.37/2.37)
=6.3/3.7
=63/37
2.5*1.25*0.32
=2.5*1.25*0.4*0.8
=2.5*0.4*(1.25*0.8)
=1*1
=1
3.8*10.1
=3.8*(10+0.1)
=3.8*10+3.8*0.1
=38+0.38
=38.38
2.4*0.8-4.48/2.8
=2.4*0.8-1.6
=(2+0.4)*0.8-1.6
=2*0.8+0.4*0.8-1.6
=1.6+0.32-1.6
=1.6-1.6+0.32
=0.32
2.6/【8.06/2-3.13】*1.4
=2.6/(4.03-3.13)*1.4
=2.6/0.9*1.4
=1.3/0.9*0.7
=130/63

2.5*1.25*0.32
=2.5*1.25*0.4*0.8
=(2.5*0.4)*(1.25*0.8)
=1*1
=1
3.8*10.1
=3.8*(10+0.1)
=3.8*10+3.8*0.1
=38.38

2.4*0.8-4.48/2.8
2.6/【8.06/2-3.13】*1.4
这是两道题?

2.5*1.25*0.32 =1(全部化成分数)

我来补充.
注:计算机所能识别的表达 式只许用 ( ) ,且只能写成一行.
1。 2.37*6.3/2.37*3.7 => ( 2.37*6.3*3.7)/2.37 = 6.3*3.7
2.。 4*0.8-4.48/2.8 => 4*0.8 -(4.48/2.8)
3. 2.6/【8.06/2-3.13】*1.4 => ...

全部展开

我来补充.
注:计算机所能识别的表达 式只许用 ( ) ,且只能写成一行.
1。 2.37*6.3/2.37*3.7 => ( 2.37*6.3*3.7)/2.37 = 6.3*3.7
2.。 4*0.8-4.48/2.8 => 4*0.8 -(4.48/2.8)
3. 2.6/【8.06/2-3.13】*1.4 => 2.6*1.4/((8.06/2)- 3.13)
要注意 ()在分子,分母,函数,指数上的正确用法。

收起