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Grade 8 Algebra: Evaluating Expressions

Name: ______________________Date: ____________Score: ____ / 6

Level 3

Several variables

1. Evaluate for x = 2, y = 3:
$4x + 2y$
2. Evaluate for a = -1, b = 4:
$a^2 + 3b$
3. Evaluate for x = 3, y = -2:
$x^2 - xy$
4. Evaluate for m = 5, n = 2:
$\dfrac{m + n}{n}$
5. Evaluate for r = 3 (use π ≈ 3.14):
$\pi r^2$
6. Evaluate for a = 2, b = -3, c = 1:
$b^2 - 4ac$

$\text{Evaluating}$ $\text{Expressions:}$ $\text{Free}$ $\text{8th}$ $\text{Grade}$ $\text{Math}$ $\text{PDF}$

$\text{Algebraic}$ $\text{expressions}$ $\text{describe}$ $\text{quantities}$ $\text{using}$ $\text{numbers,}$ $\text{variables}$ $\text{and}$ $\text{operations.}$ $\text{Combining}$ $\text{like}$ $\text{terms}$ $\text{and}$ $\text{using}$ $\text{the}$ $\text{distributive}$ $\text{property}$ $\text{helps}$ $\text{reveal}$ $\text{equivalent}$ $\text{expressions,}$ $\text{while}$ $\text{translating}$ $\text{words}$ $\text{into}$ $\text{symbols}$ $\text{connects}$ $\text{algebra}$ $\text{to}$ $\text{everyday}$ $\text{situations.}$

$\text{Evaluating}$ $\text{Expressions.}$ $\text{Level}$ $\text{3:}$ $\text{Several}$ $\text{variables.}$