Mathematics worksheet covering integer addition and subtraction properties, designed for student practice.

1.
(a) 23 + 17 = 40 → Result is an integer
(b) 3 + (-10) = -7 → Result is an integer
(c) (-85) + 18 = -67 → Result is an integer
(d) 20 + (-25) = -5 → Result is an integer
(e) 37 + (-37) = 0 → Result is an integer
(f) -50 + 0 = -50 → Result is an integer
(g) -35 + (-10) = -45 → Result is an integer

2.
(a) -6 + (-8) = (-8) + -6
(b) -63 + 0 = -63
(c) 18 + -18 = 0
(d) [13 + (-12)] + -7 = 13 + [(-12) + (-7)]
(e) -14 + [15 + (-13)] = [-14 + 15] + -13
(f) -35 + (-1) = (-1) + (-35)
(g) 0 + 90 = 90 + 0
(h) 23 + (-99) = (-99) + 23
(i) (-1) + (-1) = (-1) + -1
(j) [(-8) + (-18)] + 0 = [-8 + 0] + (-18)
(k) [(-34) + (36)] + (-2) = -34 + [36 + (-2)]