计算下面各题,能简算的要简算 :51.3÷0.27+10.1
题目
计算下面各题,能简算的要简算 :51.3÷0.27+10.1
(2)0.72÷【(0.3+0.2)*0.6】
(3)3.75÷【0.2*(0.74-0.24)】
(4)7.28+0.94+2.72+0.06
(5)7.84+0.73-0.84
(6)0.45*9.6÷1.2
(7)7.8÷【1.45-(0.4+0.05)】
(8)2.31*1.2*0.5
(9)0.85*(4.2-0.4)-0.23
(10)1.6+0.4-1.6+0.4
(11)78.4÷(0.7+4.2÷6)
(12)62.8÷2.5÷0.4
(13)110*0.1-1.4
(14)12.4÷0.4+5.6*2
(15)8.5÷4+1.5*0.25
答案
(1)51.3÷0.27+10.1
=51.3×0.3×0.9+10.1
=171÷0.9+10.1
=190+10.1
=200.1
(2)0.72÷【(0.3+0.2)*0.6】
=0.72÷【0.5×0.6】
=0.72÷0.3
=2.4
(3)3.75÷【0.2*(0.74-0.24)】
=3.75÷【0.2*0.5】
=3.75÷0.1
=37.5
(4)7.28+0.94+2.72+0.06
=(7.28/+2.72)+(0.94+0.06)
=10+1
=11
(5)7.84+0.73-0.84
=7.84-0.84+0.73
=7+0.73
=7.73
(6)0.45*9.6÷1.2
=0.45*(9.6÷1.2)
=0.45*8
=3.6
(7)7.8÷【1.45-(0.4+0.05)】
=7.8÷【1.45-0.45】
=7.8÷1
=7.8
(8)2.31*1.2*0.5
=2.31*(1.2*0.5)
=2.31*0.6
=1.386
(9)0.85*(4.2-0.4)-0.23
=0.85*3.8-0.23
=3.23-0.23
=3
(10)1.6+0.4-1.6+0.4
=(1.6-1.6)+(0.4+0.4)
=0+0.8
=0.8
(11)78.4÷(0.7+4.2÷6)
=78.4÷(0.7+0.7)
=78.4÷1.4
=56
(12)62.8÷2.5÷0.4
=62.8÷(2.5×0.4)
=62.8÷1
=62.8
(13)110*0.1-1.4
=11-1.4
=9.6
(14)12.4÷0.4+5.6*2
=31+11.2
=42.3
(15)8.5÷4+1.5*0.25
=(8.5+1.5)*0.25
=10*0.25
=2.5
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