Practice Evaluation in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

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Quick Recap

The process of calculating the numerical value of a mathematical expression by substituting specific numbers for each variable and then performing the indicated operations following the order of operations (PEMDAS/BODMAS).

Plug in the number and compute: if x=3, then 2x+1=2(3)+1=7.

Showing a random 20 of 50 problems.

Example 1

medium
Evaluate 3xy−x2 at x=2, y=5.

Example 2

easy
If y=3x−8, what is y when x=4?

Example 3

easy
Evaluate −x−4 at x=−6.

Example 4

easy
Evaluate 3a−2b at a=4, b=1.

Example 5

challenge
If f(x)=ax+b and f(1)=5, f(3)=11, find f(10).

Example 6

medium
Evaluate x2+2xx−1 at x=3.

Example 7

easy
Evaluate 7x+2 at x=5.

Example 8

hard
Evaluate f(x+h)−f(x) for f(x)=x2, then divide by h.

Example 9

challenge
Given f(x)=x2+bx+c with f(0)=4 and f(1)=9, evaluate f(−2).

Example 10

medium
Evaluate 3(x−2)2+4 at x=5.

Example 11

medium
If C=59(F−32), evaluate C at F=212.

Example 12

medium
Evaluate f(g(x)) at x=2 when f(x)=x+3 and g(x)=x2.

Example 13

easy
Evaluate 5x−3 when x=4.

Example 14

medium
Evaluate x2+9 at x=4.

Example 15

medium
Evaluate 5x−2y+1 at x=3, y=−2.

Example 16

easy
Evaluate 4+x at x=−7.

Example 17

medium
Evaluate 2x3−x+4 at x=−1.

Example 18

challenge
Evaluate the sum ∑k=14(k2−k).

Example 19

medium
Evaluate x2−5x+6 at x=2.

Example 20

easy
Evaluate x+62 at x=4.
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