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1. \(19+10.(-8)\)
2. \(18-6:2+3\)
3. \(80-20:5+14\)
4. \(30-10:2+17\)
5. \(20+120:(-10)\)
6. \(-14+90:(-10)\)
7. \(96-24:6+4\)
8. \(-5+2.(-5)\)
9. \(5+6.(-2)\)
10. \(3+6.(-14)\)
11. \(9+4.(-14)\)
12. \((-10).(-9)+17\)

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Verbetersleutel

1. \(19+10.(-8)=19+(-80)=-61\)
2. \(18-6:2+3=18-3+3=18\)
3. \(80-20:5+14=80-4+14=90\)
4. \(30-10:2+17=30-5+17=42\)
5. \(20+120:(-10)=20+ (-12)=8\)
6. \(-14+90:(-10)=-14+ (-9)=-23\)
7. \(96-24:6+4=96-4+4=96\)
8. \(-5+2.(-5)=-5+(-10)=-15\)
9. \(5+6.(-2)=5+(-12)=-7\)
10. \(3+6.(-14)=3+(-84)=-81\)
11. \(9+4.(-14)=9+(-56)=-47\)
12. \((-10).(-9)+17=90+17=107\)