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These questions should be easily mastered by the serious student of Fourth Grade Math Standards.

Area 3- Expressions in Addition and Subtraction

1. What is an expression?

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2. Keilen ate 2 more lunches than Nicole. Write an expression for the number of lunches Keilen ate.

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3. If C = 2, what is 21 - C?

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4. If c = 25, what is (c + 5) - 6?

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5. Solve c - 5 = 2

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6. Solve x - 21 = 44

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7. Solve 14 + n = 20

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8.

input (p)
3
6
9
12
15
18
output (s)
7
10
13

What are the three missing outputs?

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9. What is an expression for the above table?

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10. When a letter symbol such as x is used in math it is called a __________.

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11. Find the value of the expression, if x = 3 and y = 4.
x + (13 - y)

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12. Define how an equation stays in balance

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