2/3+0.25=2/3+1/4=11/12 11/12*0.6=11/20 5/2-11/20=39/20 0.6除以39/20=4/13 结果出来了~慢慢算
0.6÷[2又1/2-(2/3+0.25)*0.6]?
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(2.25÷0.375×1/6-0.3×2又3分之2)÷1.25
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(-5又3/1)÷(-16)÷(-2)= -4+2*(-3)-6÷0.25= (-5)÷{1.85-(2-1又4/3)*
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(-2)四次方÷(-2又2/3)²+5又1/2×(-1/6)-0.25
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0.2*(-1/2)^2-0.6^2÷0.3+6=
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脱式计算 1.98÷0.18÷0.116.25÷0.25×0.67.8÷2.6÷0.3(3.2+0.128)÷0.84.
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竖式计算:25.2÷18=0.96÷0.75=12.6÷0.3=(验算)0.35×0.26=6.3÷4.2=2.78÷2
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口算:0.6×2= 4.8÷0.6= 1.7+3= 4×9×0.25= 1.25×16= 9.6÷32= 2-0.09=
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口算1.2÷0.2= 2.5×4= 0.25+4= 1.87×0= 3.5+0.5= 1.2÷0.4= 3.6÷4= 0
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口算.40×0.7= 8.4÷0.2= 3.67×0.2= 3.5÷10= 3.6÷0.6= 1.7×0.5= 1.25
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口算.40×0.7= 8.4÷0.2= 3.67×0.2= 3.5÷10= 3.6÷0.6= 1.7×0.5= 1.25