G6_L2.1_GCF

Lesson 2.1

GCF

Video Time !

https://www.youtube.com/watch?v=LoG_udaq_ig

Open Ended

a) List all the factors of 24

b) List all the factors of 45

Open Ended

Your Turn p.32

Find the GCF using list of factors

3) 14 and 35

4) 20 and 28

Open Ended

Independent Practice p.35

Find the GCF using list of factors

14) 28 and 70

16) 45 and 81

Open Ended

Use prime factorization to find the GCF of 110 and 165

Open Ended

Independent Practice p.35

Find the GCF using prime factorization

14) 28 and 70

16) 45 and 81

Poll

Did you get the same GCF using list of factors and prime factorization?

• Yes, I did !

• No, I didn't.

Open Ended

Independent Practice p.35

Numbers 17 and 18

Open Ended

Write the sum of 15 and 21 as the product of their GCF and another sum

 $15+21=$  

Open Ended

Write the sum of 7 and 14 as the product of their GCF and another sum

 $7+14=$  

Open Ended

Independent Practice p.36

Numbers 23, 24, 25 and 26

Open Ended

Write the answer for the Additional Example here

Open Ended

Your Turn p. 32

Number 5

Open Ended

Independent Practice p.35

Number 21

Open Ended

Independent Practice p.35

Number 22

Multiple Select

Check the I can statements that you know

• I can explain the meaning of factors of a number.

• I can use list of factors to identify the greatest common factor of numbers.

• I can use the prime factorization to identify the greatest common factor of numbers.

• I can write the sum of two numbers as the product of their GCF and another sum.

• I can solve real-world problems including GCF