Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
You can change this under Settings & Account at any time.
Grade 7 Square roots
Transcript of Grade 7 Square roots
The examples below show how squares can be found.
Number Multiplied by itself Square
1 1 x 1= 1
2 2 x 2= 4
3 3 x 3=9
4 4 x 4=16
5 5 x 5=25
6 6 x 6= 36
7 7 x 7=49
8 8 x 8=64
9 9 x 9=81
10 10 x 10= 100
11 11 x 11=121
12 12 x 12=144
13 13 x 13 =169
14 14 x 14=196
15 15 x 15=225 Squared Words!
You'll hear different words used when people talk about squares. e.g.
•Square of a number: 25 is the square of 5
•Squaring a number: multiplying the number by itself
•A squared number: 100 is a square number
•3 squared: 3 squared is 9
•What's the square of 9? The square of 9 is 81
•Perfect square: Perfect square is another term for square number Take a look at page 19. The chart shows the
number of factors of each whole number. One way to describe a number with an odd number of factors is to call it a square number. Look for patterns and relationships in the chart.
*Find the factors of the numbers with two factors. What do you notice? They are prime numbers. Describe the numbers that have an odd number
of factors. Numbers: 4, 9, 25 25- has an odd number of factors One way to model a square number is to draw a square. Examples: This square has area 9
The side length is
or 3 units. We say: A square root of 9 is 3. 7 x 7 = 49
so, When we multiply a number by itself, we square
the number. Squaring and taking a square root are
inverse operations. That is, they undo each other. Find the square of each number.
a) 5 b) 15 c) 32
Work on page 21 & 22