脱式计算.(78+52)×(120÷60) (128-72)×12÷48 80-(16.405+14.9) 68.7-(44.6+0.375

2024-11-09 00:34:42
推荐回答(1个)
回答1:

(1)(78+52)×(120÷60)
=130×2
=260;

(2)(128-72)×12÷48
=56×12÷48
=672÷48
=14;

(3)80-(16.405+14.9)
=80-31.305
=48.695;

(4)68.7-(睁察粗44.6+0.375)悉镇
=68.7-44.975
=23.725;

(5)150×40×25×2
=(150×2)×(40×25)
=300×1000
=300000;没谨

(6)5625÷75+25×32
=75+800
=875.