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แบบทดสอบเตรียมสู่อุดมศึกษา

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