10/13
()÷2=5/13,1/2x()=4/7,0.5=6/()=4÷()=1:()
3个回答
相关问题
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简算:(2/5-1/3)÷5/6 、7.5+2.5÷0.5、(5/6+1/4)×24、4-5/13÷15/26-1/13
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6-2 3 5 = 18 9 13 ÷9= 5.6× 4 7 = 1 3 + 1 6 = 8÷ 4 7 = 4 5 ÷0
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15-2x=7.5 1.6÷x=2.4÷0.15 2.7÷0.3-7x=5.5 18x-4x-2.5x=3.68 3.6
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40÷(6/5÷3/8) 3/4*4/5÷3/4*5/4 45*4/9+45*3/9 8/13÷7+1/7*2/13 2
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1 8/13÷7+1/7×6/13 2 2-6/13÷9/29-2/3 3 5/12×(5/6+3/4)+4/5
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解方程.①15x÷[1/5]=[1/5];②[x/6]=[2.5/3];③x÷28%=[7/4]÷0.7.
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口算0.48÷4= 20×0.5= 4.8÷1.6= 1.5×5= 10-4.5= 0.39÷3= 7.2÷4= 6÷5
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直接写得数4.6+2.4= 7.5-5= 0.6÷0.2= 2.5×0.4= 4÷0.2= 4.2÷0.1= 9.2-1
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直接写得数4.6+2.4= 7.5-5= 0.6÷0.2= 2.5×0.4= 4÷0.2= 4.2÷0.1= 9.2-1
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3.6÷0.4-1.2×5 90÷【3.6-1.8】 【31.6-11.7】÷2.5÷0.4 3.4×7.8÷3.9 5