Grade 8 · Math · Unit 1 of 11
Squares & Square Roots
Perfect squares, their roots and in-between roots
What your child practises
Finding squares and square roots of whole numbers, spotting perfect squares, and estimating the square root of other numbers by placing it between two whole numbers.
Nunavut Curriculum approved guide: Alberta Mathematics K–9 (2007), Number · perfect squares and square roots of whole numbers, and estimating square roots of numbers that are not perfect squares
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
What is √121?
answer box
11
Hint: Which number multiplied by itself makes 121? 11 × 11 = 121, so √121 = 11.
Question 2
What is √196?
answer box
14
Hint: Which number multiplied by itself makes 196? 14 × 14 = 196, so √196 = 14.
Question 3
What is 13²?
answer box
169
Hint: 13² means 13 × 13 = 169.
Question 4
What is 7²?
answer box
49
Hint: 7² means 7 × 7 = 49.
Question 5
Which whole number is closest to √109?
- 12
- 10
- 11
- 9
10
Hint: 10² = 100 and 11² = 121. 109 is just over 100, so √109 is closest to 10.
Question 6
Which of these is a perfect square?
- 35
- 37
- 38
- 36
36
Hint: A perfect square is a whole number times itself. 6 × 6 = 36.