Question

9.9乘33分之10加33分之10的简便方法？

Answer 1

没什么简便方法，直接计算
9.9*10/33+10/33
=3+10/33
=3又10/33

Answer 2

(10-0.1)*10/33+10/33
=100/33-1/33+10.33
=109/33

Answer 3

=(9.9+1)×10/33
=10.9×10/33
约等于3.3

Answer 4