Greatest Common Factor

GCF 1

100

Greatest Common Factor of 6 and 18

What is 6

200

Greatest Common Factor of 2 and 24

What is 2

300

GCF of 5 and 15

What is 5

400

GCF of 12 and 20

What is 4

500

GCF of 7 and 21

What is 7

GCF2

100

Greatest Common factor of 20 and 50

What is 10

200

Greatest Common Factor of 24 and 88

What is 8

300

the greatest common factor of 12 and 48

What is 12

400

Greatest common factor of 30 and 90?

What is 30

500

Greatest common factor of 75 and 100

What is 25

Write the sum of the #'s as the product of their GCF and another sum.

100

30+54

6(5+9)

200

56+64

8(7+8)

300

48+14

2(24+7)

400

40+25

5(8+5)

500

63+15

3(21+5)

List the Factors

100

Factors of 12

1,2,3,4,6,12

200

Factors of 15

1,3,5,15

300

Factors of 20

1,2,4,5,10,20

400

Factors of 30

1,2,3,5,6,10,15,30

500

Factors of 55

1,5,11,55

Random

100

What comes first in the Order of Operations?

Parentheses

200

Solve 5 + 6 x 3

23

300

What does GCF stand for?

Greatest Common Factor

400

Tell me one reason why the iReady Diagnostic is important

(ANSWERS VARY)

500

What does Mrs. Noble call the two methods used in finding the GCF?

Rainbow Method, and Table Method