Using Letters for Unknown Numbers
Name: _______________________________
Date: _______________________________
Instructions: Find the value of each letter. Show your working.
Part A: Addition
1.
a + 5 = 12
a = __________
2.
b + 8 = 15
b = __________
3.
7 + c = 20
c = __________
4.
d + 14 = 30
d = __________
Part B: Subtraction
5.
e − 3 = 10
e = __________
6.
f − 7 = 12
f = __________
7.
18 − g = 9
g = __________
8.
h − 15 = 25
h = __________
Part C: Multiplication
9.
3 × j = 15
j = __________
10.
k × 4 = 24
k = __________
11.
5 × m = 30
m = __________
12.
n × 6 = 42
n = __________
Part D: Mixed Practice
13.
p + 9 = 22
p = __________
14.
q − 11 = 14
q = __________
15.
8 × r = 56
r = __________
16.
35 − s = 18
s = __________