脱式计算,能简算的要简算.2.72÷[(8.2-6.5)×0.5];9.12+

2024-11-08 16:36:38
推荐回答(1个)
回答(1):

(1)2.72÷[(8.2-6.5)×0.5]
=2.72÷[1.7×0.5],
=2.72÷0.85,
=3.2;

(2)9.12+9.12×9-60.2
=(1+9)×9.12-60.2,
=10×9.12-60.2,
=91.2-60.2,
=31;

(3)28.4÷0.4÷0.25
=28.4÷(0.4×0.25),
=28.4÷0.1,
=284;

(4)27.36-27.36÷7.6
=27.6-3.6,
=24.