2.22×9.9+6.66×6.7简算
2.22×9.9+6.66×6.7的简便运算 -
2.22x9.9+6.66x6.7 =2.22x9.9+2.22x3x6.7 =2.22x9.9+2.22x20.1 =2.22x(9.9+20.1)2.22x30 =66.6 【解析】本题主要考查学生对乘法分配律的掌握。题中并没有公因数,但是可以把6.66拆分成6.66=2.22x3。这样的话加号两边就出现了公因数2.22,然后提取公因数,按照乘还有呢?
2.22*9.9分解成2.22*3*3.3=6.66*3.3再提公因式2.22*9.9+6.66*6.7 =6.66×3.3+6.66×6.7 =6.66×(3.3+6.7)66.6
2.22x9.9+6.66x6.7 =2.22x9.9+2.22x3x6.7 =2.22x9.9+2.22x20.1 =2.22x(9.9+20.1)2.22x30 =66.6 【解析】本题主要考查学生对乘法分配律的掌握。题中并没有公因数,但是可以把6.66拆分成6.66=2.22x3。这样的话加号两边就出现了公因数2.22,然后提取公因数,按照乘还有呢?
2.22*9.9分解成2.22*3*3.3=6.66*3.3再提公因式2.22*9.9+6.66*6.7 =6.66×3.3+6.66×6.7 =6.66×(3.3+6.7)66.6
2.22×9.9+6.66×6.7 =2.22×9.9+2.22×3×6.7 =2.22×﹙9.9+3×6.7 ﹚=2.22×30.=66.6
根据题意,这道题用到的简便计算方法是乘法分配律和乘法结合律,计算方法如下:原式=2.22*3*3.3+6.66*6.7=6.66*(3.3+6.7)6.66*10=66.6。
2.22x9.9+6.66x6.7简便方法??? -
2.22x9.9+6.66x6.7 =2.22x9.9+2.22x3x6.7 =2.22x9.9+2.22x20.1 =2.22x(9.9+20.1)=2.22x30 =66.6
2.22×9.9+6.66×6.7=2.22×3×3.3+6.66×6.7=6.66×3.3+6.66×6.7=6.66×(3.3+6.7)=6.66×10=66.6
2.22×9.9+6.66×6.7简算 -
简便运算:2.22×9.9+6.66×6.7 =2.22x3x3.3+6.66+6.7 =6.66x(3.3+6.7)6.66x10 =66.6
解:采用分配律,原式=2.22×9.9+6.66×6.7 =6.66x3.3+6.66x6.7 =6.66x(3.3+6.7)6.66x10 =66.6
二点二二乘以九点九加六点六六乘以六点七简算 -
2.22×9.9+6.66×6.7 =2.22×3×3.3+6.66×6.7 =6.66×3.3+6.66×6.7 =6.66×(3.3+6.7)66.6 拆分后,乘法分配律有疑问请追问,
新野旁观者 | 二十级最快回答2.22x9.9十6.66x6.7 =6.66×3.3+6.66×6.7 =6.66×(3.3+6.7)6.66×10 =66.6