Domain check
- 100
Which value of X is excluded from 5/(X−3)?
- 200
For which values of X is (X+2)/(X²−9) undefined? Give both.
- 300
For which X…
In the game - 400
After (X²−16)/(X−4) simplifies to…
In the game - 500
Give every excluded value…
In the game
Grade 8 · Algebra
Algebra quiz for grade 8: Rational expressions
This quiz helps revise “Rational expressions” in Algebra for grade 8. It has 25 questions in five categories: Domain check, Simplify it, Multiply and divide, Add and subtract, Rational equations. Questions get harder as the points go up, from 100 to 500.
A peek at the questions
The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.
Simplify it
- 100
Simplify (X²+2X)/X, given X ≠ 0.
- 200
Simplify (X²−9)/(X−3), given X ≠ 3.
- 300
Simplify (2X²+8X)/(2X), given…
In the game - 400
Simplify (X²−4X+4)/(X−2), given…
In the game - 500
Simplify (X²−25)/(X²−10X+25), given…
In the game
Multiply and divide
- 100
Multiply and simplify X/3 · 6/X, given X ≠ 0.
- 200
Multiply and simplify 4A/5 · 15/(8A), given A ≠ 0.
- 300
Simplify (X²−9)/(X+3) · 3/(X−3)…
In the game - 400
Simplify (X²−4)/(X²−X−2)…
In the game - 500
Simplify (X²−4X+4)/(X²−4) ÷ (X−2)/(X+2)…
In the game
Add and subtract
- 100
Simplify (X+1)/(X−3) + 2/(X−3).
- 200
Simplify X/(X+2) − 2/(X+2).
- 300
Simplify 1/X + 1/(2X)…
In the game - 400
Simplify X/(X−1)…
In the game - 500
Simplify X/(X−2)…
In the game
Rational equations
- 100
Solve 1/X = 1/6.
- 200
Solve 2/(X−1) = 1/3.
- 300
Solve 9/X +…
In the game - 400
Solve 2/(X−2)…
In the game - 500
Solve (X+2)/(X−2) = 4/(X−2)…
In the game
Play this quiz
All 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.
How it works
- Pick a quiz and press “Play”.
- Send students or friends the link — they join from a phone or a computer.
- Choose questions on the board, buzz in first and collect points.