Question

要简便方法计算

Answer 1

＝4×3.6+3.6
＝3.6×（4+1）
＝3.6×5
＝18

追答

＝0.67×（99+1）
＝0.67×100
＝67

Answer 2

 

Answer 3

 

Answer 4

4×（9.3-5.7）+3.6
=4×3.6+3.6

追问

没有了吗？

追答

=5×3.6

=18

0.67×99+0.67
=0.67×（99+1）
=0.67×100
=67