Question

下面各题,怎样简便就怎样算,写出主要过程.

⒈(3618除以18减去145)乘以29
⒉ 36乘以(十二分之十一减去九分之七)

Answer 1

(3618÷18-145)×29
=(201-145)×29
=56×29
=56×(30-1)
=56×30-56×1
=1680-56
=1624

36×(11/12-7/9)
=36×11/12-36×7/9
=33-28
=5