Question

(4.12+9.36÷4.5)×3.5有简便方法吗？

Answer 1

（4.12+9.36÷4.5）×3.5
=（4.12+9.36×2/9）×3.5
=（4.12+2.08）×7/2
=6.2×7/2
=21.7

Answer 2

=（4.12+9.36÷9÷0.5）x3.5
=（4.12+1.04x2）x3.5
=（4.12+2.08）x3.5
=6.2÷2x7
=3.1x7
=21.7

Answer 3

(4.12十9.36÷4.5)x3.5
二(4.12十2.08)X3.5
二6.2X3.5
二21.7

Answer 4

先乘除后加减，先算括号里面的，再算外面的。你这个小数点太多了，没办法用简便方法了。用计算器算一下吧。

Answer 5

（4.12+9.36÷4.5）×3.5
=（4.12+9.36÷9÷0.5）×3.5
=（4.12+1.04÷0.5）×3.5
=（4.12+2.08）×3.5
=6.2×3.5
=（6+0.2）×3.5
=6×3.5+0.2×3.5
=21+0.7
=21.7