70﹣30÷5=40÷5=8. .(判断对错)
近似数5.3一定比准确数5.29大..
两个小数相乘的积保留两位小数后是5.18,积的准确值可能是5.176..(判断对错)
妈妈今天买菜花了6.5655元..(判断对错)
9.0347精确到十分位是9.(判断对错)
5.895保留两位小数约是5.90..(判断对错)