∶x= :
36×25%=
12.6÷3=
7.3﹣3=
23×489≈
9.1+0.09=
56×10%= 3.2+1.78= ﹣= 0.72÷0.6=
1.25×8= 4÷= ×= ×6÷×6=
① -( - )-
②875-375÷25
③12.5×32×0.25
④48×75%+53× -0.75
⑤