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脱式计算(能简简的要简算)2.8+0.2-2.8+0.237÷12.5÷0.81.25×(10+0.8)10.8-3.8×0.4÷0.760.36÷[(6.1-4.6)×0.8].

题目详情
脱式计算(能简简的要简算)
2.8+0.2-2.8+0.2        
37÷12.5÷0.8          
1.25×(10+0.8)
10.8-3.8×0.4÷0.76                
0.36÷[(6.1-4.6)×0.8].
▼优质解答
答案和解析
(1)2.8+0.2-2.8+0.2
=(2.8-2.8)+(0.2+0.2)
=0+0.4
=0.4

(2)37÷12.5÷0.8
=37÷(12.5×0.8)
=37÷10
=3.7

(3)1.25×(10+0.8)
=1.25×10+1.25×0.8
=12.5+1
=13.5

(4)10.8-3.8×0.4÷0.76
=10.8-1.52÷0.76
=10.8-2
=8.8

(5)0.36÷[(6.1-4.6)×0.8]
=0.36÷[1.5×0.8]
=0.36÷1.2
=0.3