Optellen en aftrekken (reeks 2)

Hoofdmenu Eentje per keer  🖨

Reken uit

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

---

Reken uit

Verbetersleutel

1. \(-3-(+7)=-3-7=-10\)
2. \(-(-3)+(+4)=3+4=7\)
3. \(-(-5)+(+8)=+5+8=13\)
4. \(-(-4)-(-4)=4+4=8\)
5. \(-(-10)-(+6)=10-6=4\)
6. \(-(-1)+(-7)=+1-7=-6\)
7. \(-9-(+5)=-9-5=-14\)
8. \(-(-5)+(-4)=+5-4=1\)
9. \(2-(-7)=2+7=9\)
10. \(-(-1)+(+7)=+1+7=8\)
11. \(-(-8)+(+1)=8+1=9\)
12. \(-(-2)+(+2)=2+2=4\)