Question

0.64×8.5+4.56能简便运算吗是多少？

Answer 1

=0.64×10-0.64×1.5+4.56 =6.4+4.56-0.96 =10.96-0.96 =10

Answer 2

=0.64×10-0.64×1.5+4.56 =6.4+4.56-0.96 =10.96-0.96 =10

Answer 3

=0.64×10-0.64×1.5+4.56
=6.4+4.56-0.96
=10.96-0.96
=10

Answer 4

18÷1.5-0.5×0.3的简便运算 8.5+(5.6-4.8)×13的简便运算 这两个题都不复杂，稍微变形，然后直接计算。

18÷1.5-0.5×0.3=18×(2/3)-0.015=12-0.015=11.985;

8.5+(5.6-4.8)×13=8.5+0.8×13=8.5+10.4=18.9。