Math Practice Problems - Variable Substitution

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Variable Substitution - Sample Math Practice Problems

The math problems below can be generated by MathScore.com, a math practice program for schools and individual families. References to complexity and mode refer to the overall difficulty of the problems as they appear in the main program. In the main program, all problems are automatically graded and the difficulty adapts dynamically based on performance. Answers to these sample questions appear at the bottom of the page. This page does not grade your responses.

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Complexity=4

Evaluate.

Complexity=6

Evaluate.

Answers

Complexity=2

Evaluate.

#	Problem	Correct Answer	Your Answer
1	(20 - 1 - n) + 9 where n = 17
Solution 20 - 1 - 17 = 2 Remove parentheses. 2 + 9 = 11

#	Problem	Correct Answer	Your Answer
2	6 + (ⁿ/₉) where n = 9
Solution ⁹/₉ => 1 Remove parentheses. 6 + 1 = 7

Complexity=4

Evaluate.

#	Problem	Correct Answer	Your Answer
1	n + (⁴²/₇) where n = 6
Solution ⁴²/₇ => 6 Remove parentheses. 6 + 6 = 12

#	Problem	Correct Answer	Your Answer
2	21 - (9 + n) where n = 0
Solution Remove parentheses. 21 - 9 = 12

Complexity=6

Evaluate.

#	Problem	Correct Answer	Your Answer
1	7(2 • n) where n = 5
Solution 2 × 5 = 10 Remove parentheses. 7 × 10 = 70

#	Problem	Correct Answer	Your Answer
2	(ⁿ/₁₀) + 7 where n = 100
Solution ¹⁰⁰/₁₀ => 10 Remove parentheses. 10 + 7 = 17

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