7m3=dm3 800mL=L=dm3
+ ÷ ÷
×1 × ×
一个墨水瓶的容积是70 一个粉笔盒的体积是1
一大瓶可乐有1.5 一个讲台的体积约0.6
× = - = × = ÷ =
+ = × = + = 15÷ =