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1. \(5-3+20\)
2. \(48-8:2+20\)
3. \(-5+15.(-14)\)
4. \(5-3-3\)
5. \(-15+30:(-3)\)
6. \(10+20.(-6)\)
7. \(40-20:5+13\)
8. \(-1+40:(-5)\)
9. \(-12+19-5\)
10. \(-4+5.(-13)\)
11. \(150-30:6+16\)
12. \(36-12:3+20\)

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Verbetersleutel

1. \(5-3+20=22\)
2. \(48-8:2+20=48-4+20=64\)
3. \(-5+15.(-14)=-5+(-210)=-215\)
4. \(5-3-3=-1\)
5. \(-15+30:(-3)=-15+ (-10)=-25\)
6. \(10+20.(-6)=10+(-120)=-110\)
7. \(40-20:5+13=40-4+13=49\)
8. \(-1+40:(-5)=-1+ (-8)=-9\)
9. \(-12+19-5=2\)
10. \(-4+5.(-13)=-4+(-65)=-69\)
11. \(150-30:6+16=150-5+16=161\)
12. \(36-12:3+20=36-4+20=52\)