脱式计算:(能简算的要简算) 128+306÷17×9 25×33×4×2 &...

2024-12-14 06:21:02
推荐回答(1个)
回答1:

(1)128+306÷17×9
=128+18×9
=128+162
=290;

(2)25×33×4×2 
=(25×4)×(33×2)
=100×66
=6600;

(3)156+6.2-15.6+6.2
=162.2-15.6+6.2
=146.6+6.2
=152.8;

(4)70-29.6-10.4
=70-(29.6+10.4)
=70-40
=30;

(5)132×75-75×32        
=(132-32)×75
=100×75
=7500;

(6)283×15+17×15
=(283+17)×15
=300×15
=4500.