4.35×1.02○4.353.98÷1.2○3.980.98×0.98○0.98 40.5÷0.8○40.5 8.24×1○8.243.9÷0.99○3.910、0.25×9.7×4=9.7×( ×)二、判断(每1分,共6分)1、求商的近似值时,要...