① × ×
② ÷( + )
③ ÷ ÷
④ ×( ÷ )
⑤( ﹣ )×
⑥9.9× +
种类
汽车
运动
时尚
娱乐
其它
本数
250
750
1200
1000
800
8× = 2.8﹣ = ×1= ÷9= ×20=
+ = ÷ = + = ×0.2= 1÷ =
÷9= × = ÷ = 1﹣ = 150%﹣150%=
24÷ = ÷4= 0÷ = × = ×24× =
×0= × = 6 = 3.6× = ×70=
+ = ﹣0= 55%﹣ = 2.4÷0.4= 2÷0.5=
÷ 1÷ ÷1 ×1
0.25 × × 0÷
5× 5÷ 105% ×
8:=4 吨=千克 52cm=m
4:5=20: dm2=cm2 1.2=%
×2.3=230 12 ÷7= × =25%
12分=时 24:18=:6