Subtract: 4 from -7
4 from -7 = -7 – 4 = -11
Add: 13 and 15
Add: 13 and -15
Add: -13 and -15
Add: 259 from 214
Add: -528 and -243
Add: -623 and 326
Subtract: 5 from 8
Subtract: -5 from 8
Subtract: -6 from -3
Subtract: -222 from 0