直接写出得数1.25×3×8= 436﹣297= 9×3.5= += 3.68+1.32=100×2.8%= 6﹣2= 9÷19= ﹣25%= 15.2÷0.1=
甲数是24,正好是乙数的,乙数是多少?
直接写出得数.= = = == ×+= ﹣= +=
李老师把米长的木棒锯成相等的若干段做学具,共锯了4次,每段长多少米?
直接写出得数.= = = 5.6÷4=3.4﹣8= = = =
直接写数对又快:1÷= += ÷= (﹣)×18=÷3= ×= ﹣= ×÷×=