1.- 1/2
2.2
3. 105
4.0
5.(P-xQ)
6. 1/5
7.-23℃
8.7.5
9.4 or 2
10.(3+0.5x)80%= 16.8
1 1.-2
12. Countdown
13.2.56438+0 * 10 to the fifth power.
14 1 or-1
15. No more than 4
Either-or problem
BCA China construction bank
Do three calculation problems by yourself.
Four painting problems
Main View 343 Left View 134
I'll stop here.