计算下面各题. 1.35÷1.5+6.12×

2025-03-22 06:24:02
推荐回答(1个)
回答1:

(1)1.35÷1.5+6.12×0.5,
=0.9+3.06,
=3.96;

(2)[1.7÷(6.8-6.12)]×8.6,
=[1.7÷0.68]×8.6,
=2.5×8.6,
=21.5;

(3)4.8×0.65+0.65×4.2,
=(4.8+4.2)×0.65,
=9×0.65,
=5.85;

(4)6.8÷[(4.5-2.8)×0.4],
=6.8÷[1.7×0.4],
=6.8÷0.68,
=10.