Reken uit
- \(-1-2=\)
- \(1-9=\)
- \(4-5=\)
- \(-6+6=\)
- \(-7-8=\)
- \(1-11=\)
- \(-6-1=\)
- \(6-7=\)
- \(-12-6=\)
- \(3-9=\)
- \(1-10=\)
- \(3-12=\)
Reken uit
Verbetersleutel
- \(-1-2=-3\)
- \(1-9=-8\)
- \(4-5=-1\)
- \(-6+6=0\)
- \(-7-8=-15\)
- \(1-11=-10\)
- \(-6-1=-7\)
- \(6-7=-1\)
- \(-12-6=-18\)
- \(3-9=-6\)
- \(1-10=-9\)
- \(3-12=-9\)