Factors, Multiples and Primes

Factors, Multiples and Primes

Multiple Choice

what are the first 5 multiples of 11?

• 11, 1

• 11, 10, 9, 8, 7

• 11, 12, 13, 14, 15

• 11, 22, 33, 44, 55

Multiple Choice

what are the first 4 multiples of 14?

• 1, 2, 7, 14

• 14, 28, 42, 56

• 14, 21, 28, 35

• 14, 140, 1400, 14000

Multiple Choice

which of the following numbers is not a multiple of 12?

24, 36, 42, 120

• 24

• 36

• 42

• 120

Multiple Choice

which of the following numbers is not a multiple of 15?

150, 300, 450, 730

• 150

• 300

• 450

• 730

Multiple Choice

List all the multiplies of 3 between 60 and 80

• 63, 66, 68, 71, 74, 77

• 63, 66, 69, 71, 75, 78

• 63, 66, 69, 72, 78

• 63, 66, 69, 72, 75, 78

Multiple Choice

List all the multiples of 2 between 16 and 34

• 18,20,22,24,26,28,30,32,34

• 17,19,21,23,35,27,29,31,33

• 1, 2, 8, 16, 4

• 1, 34, 17, 2

Multiple Choice

Choose 3 common multiples of 5 and 10

• 50, 150. 200

• 15, 25, 35

• 5, 10, 20

• 10, 20, 25

Multiple Choice

Choose 3 common multiples of 6 and 12

• 12, 24, 30

• 12, 18, 24

• 12, 24, 36

• 1, 2, 3, 4, 6

Multiple Choice

A bus to Belfast leaves Antrim Bus Station every 25 minutes. The first bus each day leaves at 7am. Darren wants to get a bus after 8am. What time is the first suitable bus?

• 8:25am

• 8:50am

• 8:15am

• 8:10am

Multiple Choice

A light flashes every 8 seconds. How many times will it flash in 2 and a half minutes?

• 18

• 10

• 25

• 28

Multiple Choice

Choose the answer which lists all the factors of 10

• 1, 2, 5, 10

• 1, 10

• 5, 2

• 10, 20, 30...

Multiple Choice

Choose the answer which lists all the factors of 15

• 1, 15

• 3, 5

• 1, 3, 5, 15

• 1, 3, 5, 15, 30

Multiple Choice

Choose the answer which lists all the factors of 7

• 1, 7

• 1, 7, 3.5, 2

• 1, 7, 14, 21

• 1, 7, 14, 21, 28 35, 42, 47, 56, 63 70

Multiple Choice

Which of these numbers is not a factor of 100?

• 4

• 30

• 25

• 10

Multiple Choice

Which of the following do not have exactly 4 factors​

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15, 4, 6, 8, 10

• 15

• 4

• 6

• 8

• 10

Multiple Choice

Which of the following numbers has the most factors?​

​

15, 20, 9, 4, 1

• 15

• 20

• 9

• 4

• 1

Multiple Choice

Which of the following has the least number of factors?​

​

15, 20, 9, 4, 1

• 15

• 20

• 9

• 4

• 1

Multiple Choice

Which are the common factors of 12 and 15?

• 1, 3, 5

• 1, 3, 4

• 180

• 60

Open Ended

Is 20 a prime number? Explain your answer.

Multiple Choice

what is the smallest prime number?

• 1

• 0

• 2

• 3

Open Ended

21 25 30 45 Which number is the odd one out? why?

Open Ended

15 24 28 33 Which number is the odd one out? why?

​Well done you have completed the lesson :)

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​Bring any questions you couldn't answer to class