Identifying Variables Worksheet
A Grade 3 math worksheet to help students understand and identify variables in simple equations and expressions.
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Standards
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Identifying Variables
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Read each question carefully and follow the instructions. A variable is a letter that stands for an unknown number.
1. In the equation 5 + x = 12, the variable is .
2. A letter that represents an unknown number is called a .
3. In the expression y - 3, the variable is .
4. Which of these is a variable?
7
p
+
=
5. In the equation 10 - m = 4, what is the variable?
10
-
m
4
6. Look at the balance scale. If the left side has 5 apples and the right side has 'x' apples, and the scale is balanced, what does 'x' represent?
7. In the problem: 'Sarah has some candies, c. She gets 3 more candies, and now she has 8 candies in total.' What is the variable in this problem?
8. In the equation 6 + 2 = 8, there is a variable.
True
False
9. The letter 'z' in the equation 15 - z = 7 is a variable.
True
False
10. Explain in your own words what a variable is and why we use it in math.