一条鱼重500克， 条这样的鱼重1千克．
× =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．
商与除数的积，一定不等于被除数． ．
× =1.5× =
× =1．
× =5× = ×
=7÷ =1．
= ×
=1．
粤公网安备 44130202000953号