MTH1W – Integers Practice Worksheet Answer Key (Number Sense)
Addition and Subtraction
1) Evaluate. Draw a number line if needed.
a) 6 + (-9) = -3
6 -9 = -3
b) -4 - (-7) = 3
4+7=3
c) 12 - 18 = -6
d) -10 + 3 = -7
e) 5 - (-11) = 16
5 + 11 = 16
f) -15 + (-6) = -21
-15 - 6 = -21
g) 20 - (-4) = 24
20 + 4 = 24
h) -8 + 14 = 6
i) -25 - 5 = -30
2) Draw on a number line
a) Start at –1 and move 4 units right. What number do you land on? Is this addition or
subtraction?
-1 + 4 = 3 addition, moves right
b) Start at 3 and move 5 units to the left. What number do you land on? Is this addition
or subtraction?
3 - 5 = -2 subtraction, moves left
Addition and Subtraction
1) Evaluate. Draw a number line if needed.
a) 6 + (-9) = -3
6 -9 = -3
b) -4 - (-7) = 3
4+7=3
c) 12 - 18 = -6
d) -10 + 3 = -7
e) 5 - (-11) = 16
5 + 11 = 16
f) -15 + (-6) = -21
-15 - 6 = -21
g) 20 - (-4) = 24
20 + 4 = 24
h) -8 + 14 = 6
i) -25 - 5 = -30
2) Draw on a number line
a) Start at –1 and move 4 units right. What number do you land on? Is this addition or
subtraction?
-1 + 4 = 3 addition, moves right
b) Start at 3 and move 5 units to the left. What number do you land on? Is this addition
or subtraction?
3 - 5 = -2 subtraction, moves left
