Question

数学：求“0.23×7又五分之3+0.23×5分之2+100分之23×2”等于多少简便算法？

Answer 1

0.23*7又5分之3+0.23*5分之2+100分之23*2
=0.23*（7+5分之3）+0.23*5分之2+0.23*2
=0.23*7+0.23*5分之3+0.23*5分之2+0.23*2
=0.23*7+0.23*1+0.23*2
=0.23*10
=2.3

Answer 2

答案见下面图片——

Answer 3

遇到有小数和分数形式的先统一为小数形式或者分数形式，然后观察是否有公因式，此题中0.23是公因式，利用乘法的结合律，可以得到0.23*（7.6+0.4+2），结果为2.3

Answer 4

0.23×7又3/5+0.23×2/5+23%×2
=0.23×7又3/5+0.23×2/5+0.23×2
=0.23×(7又3/5+2/5+2)
=0.23×10
=2.3

Answer 5

0.23×38/5+0.23×2/5+23/100×2
=0.23×(38/5+2/5+2)
=0.23×10
=2.3