Multiplication
Greatest Common Factor
Least Common Multiple
Division
Ratio Challenge
100

4 X 5

20

100

What is greatest common factor?

The greatest common factor is the largest number that divides into two or more numbers.  

100

What is Least common multiple?

The least common multiple is the least nonzero number that is a multiple of two or more whole numbers. 

100

6 divided by 3?

2

100

If I have 10 pennies and 4 quarters, what is the ratio of pennies to quarters?

10:4

200

What is 8 x 7?

56

200

What is the GCF of 8 and 32?

8

200

Find the least common multiple of 5 and 6?

30

200

25 divided by 5?

5

200

If Bri has 3 chocolate chip cookies and 2 Oreos, what is the ratio of Oreos to chocolate chip cookies?

2:3

300

what is 10 x 11?

110

300

What is the GCF of 24 and 60?

12

300

LCM of 6 and 9?

54

300

24 divided by 12?

2

300

If Luis has 7 red Starburts and 6 pink Starbursts, what is the ratio of pink Starburts to red Starbursts?

7:6

400

21 X 24?

504

400

What is the GCF of 21 and 35?

7

400

Least common multiple of 3 and 5?

15

400

360 divided by 10?

36

500

321 x 123

39,483

500

What is the GCF of 21, 24, and 27?

3

500

LCM of 9, 12, 18?

36

500

270 divided by 3?

90