Factors
Multiples
LCM
GCF (or HCF)
Primes and Composites
100

Factors of 6=

What is 1,2,3,6

100

24, 48, 72, 96, 120...

What are the multiples of 24?

100

LCM of 8 and 9

72

100

The greatest common factor of 6 and 24

6

100

What is a prime number?

a number with only 2 factors: 1 and the number

200

Factors of 5=

What is 1,5

200

The first five multiples of 14

14, 28, 42, 56, 70

200

LCM of 6 and 7

42

200

GCF of 8 and 17

What is 1?

200

The first 5 prime numbers

2, 3, 5, 7, 11

300

The factors of 36

What is 1, 2, 3, 4, 6, 9, 12, 18, 36

300

Give 5 multiples of 7

What is 7, 14, 21, 28, 35, 42, 49, ...

300

The least common multiple of 8 and 24

24

300

GCF of 9 and 27

9

300

Why is 0 a composite number?

It has many factors

400

1, 2, 3, 5, 6, 10, 15, 30 are all the factors of what number?

factors of 30

400

True or False: The multiples of prime numbers are also prime

False

400

33 is the LCM of these two prime numbers

3 and 11

400

GCF of 12 and 36

12

400

Explain why the number 1 is neither prime or composite

It only has 1 factor

500

The missing number in these factors: 1, 2, 4, 8, 10, 20, 40  (Hint: they are the factors of 40)

5 is missing

500

36, 45, 72, 108 are multiples of this number

either 3 or 9

500

LCM of 5 and 13

65

500

GCF of 18 and 54

18

500

Give the PRIME FACTORIZATION of 72

23 x 32     OR

2 x 2 x 2 x 3 x 3


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