如果a与b的比是5：3，那么a就是b的． ．
直接写得数．×6= 30×=÷= 20÷=+=××0=×= 1÷×= 5.6÷0.08= 39××=
直接写得数．﹣=÷=×=×= 10×=×=÷=÷= 15×=÷=+=÷22=
直接写出得数．=========．
直接写出得数．÷10=×= 1÷= 8×= 1+=÷=×÷= 1÷6×=
直接写得数． 4×30%=﹣= 44÷= 0.45÷5= 10﹣0.57﹣0.43=×÷×=﹣×= 0.68++0.32= 8.37×2.4÷1.9×0= 1÷5+=
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×6= 30×
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