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2.22×9.96.66×6.7 用简便方法怎么算

222*99+666*67 =222*3*33+666*67 =666*33+67 =666*10 =666

先提取2.22,变成2.22*(9.9+6.7*3) 再提取3,变成6.66*(3.3+6.7)=6.66*10=66.6 ok,够简便了吧

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.=66.61231321

看题目应该是2.22*9.9+6.66*6.7=(2.22*3)*(9.9÷3)+6.66*6.7=6.66*(3.3+6.7)=6.66*10=66.6

2.22x9.9+6.66x6.7=6.66x3.3+6.66x6.7=6.66x(3.3+6.7)=6.66x10=66.6

=2.2*3*3.3+6.6*6.7 =6.6*(3.3+6.7) =6.6*10 =66

2.22*3.3 *3+6.66 *6.7=6.66 *3.3+6.66 *6.7=6.66 *10=66.6

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

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

2.22x9.9+6.66x6.7=6.66x3.3+6.66x6.7=6.66x(3.3+6.7)=6.66x10=66.6

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