Factors
Multiples
Prime or Composite?
Order of Operations
Potpourri
100

Name all the factors of 12.

1, 2, 3, 4, 6, 12.

100

What is the fifth multiple of 4?

20

100
Is 15 prime or composite? Why?
Composite, because it has more than 2 factors. (1 and 15; 3 and 5).
100

2³ + 5²

33

100

What is the LCM of 25 and 15? 

A) 5                B) 50

C) 75             D) 150

75

200

Name all the factors of 28.

1, 2, 4, 7, 14, 28.

200

What is the twelfth multiple of 5?

60

200
Is 17 prime or composite?
17 is prime because it only has two factors (1 and 17).
200

(13² - 8²) x 2

(169 - 64) x 2

105 x 2

210

200

Write the prime factorization for 100

2² x 5²

300

Name all the factors of 60

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60. 

300
What are the first 5 multiples of 3?
3, 6, 9, 12, 15
300

Name any prime number over 50. Why is it prime?

[Accept any prime number and the correct explanation - it only has 2 factors, 1 and itself.)

300

4³ - 15 ÷5

64 - 15 ÷ 5

64 - 3

61

300

Find the LCM of 6 and 45

6: 2 x 3

45: 3² x 5

LCM: 2 x 3² x 5 = 90

400

What is GCF of 45 and 105?

45: 3x3x5

105: 3x5x7

15

400

What is the least common multiple of 15 and 20?

60

400

Which numbers under 10 

are divisible by 84? 

Must include ALL of them. 

1, 2, 3, 4, 6, 7


1x84; 2x42, 3x28, 4x21, 6x16, 7x12

400

100(3² - 4) ÷ 50 - 5

100 x 5 ÷ 50 - 5

500 ÷ 50 - 5

10 - 5

5

400

Define "factor pair" 

A pair (2) of numbers that multiply to get a product.  
500

What prime factors do 20 and 30 share? 

20: 2x2x5

30: 2x3x5

They share a 2 and a 5 and technically a 1 (optional answer). 

500
What are the first 10 multiples of 9?
9, 18, 27, 36, 45, 54, 63, 72, 81, 90
500

Which 6 numbers on this list are perfect squares? 

16, 24, 49, 50, 99, 100, 110, 121, 169, 225, 500

16, 49, 100, 121, 169, 225

500

500 - 2(8² - 7²)²

500 - 2(64-49)²

500 - 2(15)²

500 - 2(225)

500 - 450 = 50

500

Find both the GCF and LCM of 25 and 60

PF for 25: 52

PF for 60: 22 x 3 x 5

GCF: 5

LCM: 22 x 3 x 52 = 300

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