Question

48.5×5.6-85×0.56怎么简便运算？

Answer 1

简便运算：
48.5×5.6-85×0.56
=48.5×5.6-8.5×5.6
=5.6×（48.5-8.5）
=5.6×40
=224

Answer 2

简便运算方法:
48.5×5.6-85×0.56
=485×0.1×5.6-85×0.56
=485×0.56-85×0.56
=（485-85）×0.56
=400×0.56
=224
这道题关键是怎么寻找公因式简便运算，然后用乘法分配律得出结果。