Haakjesregel (intermezzo)

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Werk de haakjes weg

1. \(-(-6)+(+3)=\)
2. \(-(-4)+(-3)=\)
3. \(-(+1)-(-8)=\)
4. \(-(-7)-(+4)=\)
5. \(-(-4)-(+8)=\)
6. \(-(-1)+(+3)=\)
7. \(-(-8)-(-8)=\)
8. \(-7-(-5)=\)
9. \(-(-11)+(-2)=\)
10. \(-(-5)+(-8)=\)
11. \(-1-(+6)=\)
12. \(-(-7)-(+6)=\)

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Werk de haakjes weg

Verbetersleutel

1. \(-(-6)+(+3)=6+3\)
2. \(-(-4)+(-3)=4-3\)
3. \(-(+1)-(-8)=-1+8\)
4. \(-(-7)-(+4)=7-4\)
5. \(-(-4)-(+8)=4-8\)
6. \(-(-1)+(+3)=+1+3\)
7. \(-(-8)-(-8)=8+8\)
8. \(-7-(-5)=-7+5\)
9. \(-(-11)+(-2)=+11-2\)
10. \(-(-5)+(-8)=5-8\)
11. \(-1-(+6)=-1-6\)
12. \(-(-7)-(+6)=7-6\)