9.99×22.2+33.3×3.34有简便方法吗
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9.99×22.2+33.3×3.34有简便方法吗9.99×22.2+33.3×3.34有简便方法吗9.99×22.2+33.3×3.34有简便方法吗9.99*22.2+33.3*3.34=（3.33
9.99×22.2+33.3×3.34有简便方法吗
9.99×22.2+33.3×3.34有简便方法吗
9.99×22.2+33.3×3.34有简便方法吗
9.99*22.2+33.3*3.34
=（3.33*3）*22.2+（3.33*10）*3.34
=3.33*（3*22.2）+3.33*（10*3.34）
=3.33*66.6+3.33*33.4
=3.33*（66.6+33.4）
=3.33*100
=333
以上式子里面的星号*是指乘号×