4吨的和1吨的一样重. .
横线上里最大填几? 28× <150 ×73<163 59× <400 ×95<715.
× =1.5× =× =1.
× =5× = ×=7÷ =1.
在横线里填上适当的数. (90﹣60)× =150 408÷8+ =100 (960﹣60)÷ =5 ×(54﹣48)=726.
﹣ = ×=1.