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