-=
+=
÷=
×=
×3.9=
0.63÷=
-÷=
×÷×=
⑴3.6×=
3.6+=
3.6-=
3.6÷=
⑵3.14× 6=
=
21.98÷3.14=
3.14×=
⑶20×50%=
4.5÷50%=
:0.35=
24:=
⑷( ):=3
()×12=
1-=
5÷(1+)= 4×0.5= 0.75×= 1﹣1×=
+×= 24÷= ×0.25= +=
10﹣= 1﹣×= ×6÷×6= 1÷×=
3.14×9= 7.2×= 1.25××0.8=
3.14×2.25= 12×()=
= 1.8-40%= 12÷=
×72%= 3.5×= -×=
×50%=
×9= ÷ = 0÷ =
- = × = ÷ =
20÷ = ÷( - )=
把上面这些数字按从小到大排列:
<<<<<
把上面这些算式按得数从大到小排列:
>>>
对雾霾的了解程度
百分比
A .非常了解
5%
B .比较了解
m
C .基本了解
45%
D .不了解
n