综合算式为:
口算:+= 3﹣2= 1÷1= 7×÷7×=5÷5= ×1.2= ×1= (+)×20=
直接写得数.4÷40%= ×= 20×5.5= (+)×4=﹣= 2.9+3.4= 0.1÷0.01= 6﹣﹣=÷3= 6×= ÷= 1÷﹣÷1=
直接写出得数+= ×= 1﹣20%﹣= 4×== +25%= 3﹣= =
直接写得数.= 4﹣1.63= = == = = == 27×5%= %= =
直接写得数+= ﹣= ×= ×=×÷×= += ×0+3= 3+1.75=÷= (+)×=