mwbr.net
当前位置:首页 >> 脱式计算:(怎样简便就怎样计算)7.8×(3.64÷2.6... >>

脱式计算:(怎样简便就怎样计算)7.8×(3.64÷2.6...

(1)7.8×(3.64÷2.6)=7.8÷2.6×3.64=3×3.64=10.92;(2)27.8÷2.5÷4=27.8÷(2.5×4)=27.8÷10=2.78.

(1)[8.5-(3.6+3.6)]÷2.6=[8.5-7.2]÷2.6=1.3÷2.6=0.5;(2)10.1×87=(10+0.1)×87=10×87+0.1×87=870+8.7=878.7;(3)1.4×[(7.5+38.4)÷0.9]=1.4×[45.9÷0.9]=1.4×51=71.4.

4.635

你好: 谷哥22为您解答:5.64+2.6×3.7 =5.64+9.62 =15.26 望采纳,谢谢!!! 理由:有加减乘除的,先算乘除法,再算加减法。

(1)7×8+23 =56+23,=79;(2)(51-23)÷7=28÷7,=4;(3)48+4×6=48+24,=72;(4)63÷(36-29)=63÷7,=9;(5)86-6×9=86-54,=32;(6)(36+45)÷9=81÷9,=9.

1. (0.2+6.37÷0.7)×0.5 =(0.2+9.1)×0.5 =9.3×0.5 =4.65

3.8X7.2-3.8X6.2 =3.8X(7.2-6.2) =3.8x1 =3.8

(1)15.64-2.53-7.47=15.64-(2.53+7.47),=15.64-10,=5.64;(2)3.7+6.3÷0.6-0.4=3.7+10.5-0.4,=13.8;(3)3.5÷[(0.45-0.38)×0.1]=3.5÷[0.07×0.1],=3.5÷0.007,=500;(4)5.6×7.2+4.4×7.2=(5.6+4.4)×7.2,=10×7.2,=72.

(1)2.43×99+2.43,=2.43×(99+1),=2.43×100,=243;(2)25-[7.8+(6.2+1.61÷0.23)],=25-[7.8+(6.2+7)],=25-[7.8+13.2],=25-21,=4;(3)20-(2.4+2.4×1.25);=20-(2.4+3),=20-5.4,=14.6;(4)4.58+2.39+(5.42+7.61),=(4....

34×3.535-3.5×34.34 =34×3.5×1.01-3.5×34×1.01 =0 8+89+899+8999+89999 =9+90+900+9000+90000-5 =99999-5 =99994 0.67×2.1+0.018×21+8.5×0.79 =0.67×2.1+0.18×2.1+8.5×0.79 =(0.67+0.18)×2.1+8.5×0.79 =0.85×2.1+0.85×7.9 =0.85×(2.1+7.9) =...

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