Exact values
- 100
Evaluate √49.
- 200
A square has area 144 cm². What is its side length?
- 300In the game
- 400In the game
- 500
A square has area…
In the game
Grade 8 · Algebra
Algebra quiz for grade 8: Square roots
This quiz helps revise “Square roots” in Algebra for grade 8. It has 25 questions in five categories: Exact values, Meaning and domain, Simplify radicals, Estimate and compare, Equations and area. 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.
Meaning and domain
- 100
What sign does √25 have?
- 200
How many real square roots does 36 have?
- 300
For real…
In the game - 400
Is √(−9)…
In the game - 500
What values of x…
In the game
Simplify radicals
- 100
Simplify √12.
- 200
Simplify √45.
- 300
A square has area…
In the game - 400In the game
- 500
Simplify 2√18…
In the game
Estimate and compare
- 100
Between which two consecutive integers does √20 lie?
- 200
Round √2 to the nearest tenth.
- 300
How does √50…
In the game - 400
Which integer is…
In the game - 500
Can √18/√2 be written…
In the game
Equations and area
- 100
A square courtyard has area 100 m². What is its side length?
- 200
If √x = 11, what is x?
- 300
What values of x…
In the game - 400
A square frame has…
In the game - 500
Solve √(x +…
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.