①6x÷=24
②x÷=×
③x÷+=
5.3÷0.01=
80%:6=
0.75+99×0.75=
=
×75% =
12÷()=
8×0.5÷0.5×8=
20×= 36÷= -= 1÷=
40×20%= 3.14×3= 12.56÷3.14= 1-÷=
×= 1÷25%=
数量(台)
1
2
3
4
5
6
价格(元)
317
634
951
1268
1585
1902
○=
2.5×4= ×= ÷= ﹣0.25=
﹣= 1﹣﹣= 1÷20%= 80%×=