Ontario · Grade 8
G8.B2.2
Grade 8 — Understand and recall commonly used square numbers and their square roots.
A note on this mapping: Ontario names square roots only; cube roots are not a Grade 8 expectation there and ride in on the Common Core tag.
The skill that covers it
What a student should be able to do
- Evaluate square roots of perfect squares and cube roots of perfect cubes.
- Solve equations of the form x2 = p and x3 = p, remembering both square roots.
- Estimate a non-perfect square root between two whole numbers and to one decimal place.
- Use roots to find the side of a square or the edge of a cube from its area or volume.