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แบบทดสอบเตรียมสู่อุดมศึกษา

1. (31-11)+26=?
2. (21*7)+[(-2)*(-10)]=?
3. (200/4)+[100-(-50)]=?
4. [67+(-7)]*(-5)=?
5. [(18/2)+(-4)]*20=?
6. [(-15)+(-15)*20]+(70/10)=?
7. [(100/25)*5]+(-13)=?
8. (-16)+4+(-20)=?
9. 75-(-25)=?
10. 99*(-10)=?
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