1 of 10

AB: required BC: required

MB: required ON: recommended

Teacher Resource 6.1 Unit 7 Number Sense pp. H-8–10

New Canadian Edition

JUMP Math™ Copyright © 2018 JUMP Math

NS6-19

Factors

Students will:

• use an organized method to find all pairs of numbers that multiply to a given number.

AP Book 6.1 pp. 125–126

2 of 10

3 of 10

What are whole numbers?

See p. H-8 for details.

Brainstorm ways of multiplying two whole numbers to get 12:

factors

4 of 10

How could you show that 2 is a factor of 6?

See p. H-8 for details.

Does this show us another factor of 6?

5 of 10

Exercises:

Write a multiplication equation that shows …

a) 5 is a factor of 10

b) 8 is a factor of 80

We can also prove that one number is a factor of another number by skip counting.

6 of 10

Exercises:

Write a multiplication equation that shows …

a) 1 is a factor of 2

7 of 10

What numbers is 1 a factor of?

See p. H-8 for details.

Hint: When you count by 1s, what numbers do you reach?

8 of 10

0 × = 10

2 × = 10

3 × = 10

1 × = 10

I want to find all the factors of 10:

See pp. H-8–9 for details.

Can a number greater than 10 be a factor of 10?

Hint: Should I keep going?

9 of 10

Exercises:

Find all the factors of ...

a) 12

Hint: We found the factors of 10 by checking the numbers from 1 to 10 in order.

10 of 10

Can you find all the factor pairs for 12?

Example:

See p. H-9 for details.

The factors of a number come in pairs.

3 × 4 = 12

So 3 and 4 are a factor pair for 12.