Haakjesregel (intermezzo)

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Werk de haakjes weg

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

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Werk de haakjes weg

Verbetersleutel

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