Careful with Signs: Challenge & Extension
Mathematics
Grade 8
12 questions
~24 mins
1 views0 downloads
About This Worksheet
A challenging worksheet focused on the importance of signs during substitution in algebraic expressions. Designed to develop careful calculation skills and reasoning for Grade 8 students.
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Full preview • 12 questions
Careful with Signs: Challenge & Extension
Subject: MathematicsGrade: Grade 8
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Untitled Worksheet
Grade Grade 8
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Calculate the value of -3 + ( -5 ) when substituting into the expression: 2x - 7, where x = (-3 + (-5)).
[3 marks]2.
Evaluate: 4 - ( -6 ) + ( -2 ).
[2 marks]3.
If y = -4, find the value of 3y + | y |.
[3 marks]4.
Simplify: -2( 3 - ( -4 ) ) + ( -5 ).
[4 marks]5.
Substitute x = -2 into the expression: 5x^2 - 3x + 4. Calculate the result.
[3 marks]6.
Evaluate: (-7) + 2 * ( -3 ) - ( -4 ).
[3 marks]7.
A person walks 5 meters west, then 3 meters east, then 2 meters west. What is their final position relative to their starting point?
[4 marks]8.
Construct an algebraic expression for the total cost if a ticket costs -$4 per person, and there are x people. Then, evaluate for x = -3.
[4 marks]9.
Identify the error: Calculate 3 - (-2) and students think the answer is 5 without changing the signs.
[3 marks]10.
Simplify: - ( - ( -8 ) ).
[2 marks]11.
Evaluate: (-5) * ( -2 ) + ( -3 ).
[2 marks]12.
A bank account has a balance of -$150. If you deposit $50, what is the new balance?
[3 marks]Quick Actions
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Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet