Reken uit
- \(-10+15.(-6)\)
- \((-2).(-18)+18\)
- \(-16-26-10\)
- \(36-12:6+20\)
- \(7-21-28\)
- \(-1+135:(-9)\)
- \(30-10:2+2\)
- \(45-9:3+14\)
- \(2+18.(-8)\)
- \(54-9:3+9\)
- \((-13).(-13)+12\)
- \(-9+84:(-7)\)
Reken uit
Verbetersleutel
- \(-10+15.(-6)=-10+(-90)=-100\)
- \((-2).(-18)+18=36+18=54\)
- \(-16-26-10=-52\)
- \(36-12:6+20=36-2+20=54\)
- \(7-21-28=-42\)
- \(-1+135:(-9)=-1+ (-15)=-16\)
- \(30-10:2+2=30-5+2=27\)
- \(45-9:3+14=45-3+14=56\)
- \(2+18.(-8)=2+(-144)=-142\)
- \(54-9:3+9=54-3+9=60\)
- \((-13).(-13)+12=169+12=181\)
- \(-9+84:(-7)=-9+ (-12)=-21\)