factors

Question 1

besides 16 and 1 what Is a factor of 16?

Answer 1

4

Question 2

with number is a factor of 20 : 3,5,8,6

Answer 2

5

Question 3

Which numbers are factors of 19? Select all that apply. 7 ,13 , 8 , 18

Answer 3

8 19

Question 4

Write down the first five multiples of 3.

Answer 4

3 6 9 12 15

Question 5

right down the first 10 multiples of 7

Answer 5

7 14 21 28 35 42 49 66 63 70

Question 6

write down the 5 multiples of 5.

Answer 6

5 10 15 20 25 30

Question 7

write down the multiples of 12.

Answer 7

12 24 36 48 60 72 84 96

Question 8

Write down two multiples of 4

Answer 8

4 8

Question 9

Write down two multiples of 9

Answer 9

9 18

Question 10

Write down a number which is a multiple of both 4 and 9.

Answer 10

36

Question 11

Write down all the factors of 16.

Answer 11

1 2 8 16

Question 12

Write down all the factors of 26.

Answer 12

1 ,2 , 13 , 26

Question 13

From the list of numbers

3! 5! 7! 9! 11! 15! 24 Write down a factor of 12 Write down a factor of 28 Write down a factor of 81

Answer 13

a / 3, b/ 7. c, 9

Question 14

Write down all the prime numbers between 10 and 20.

Answer 14

11 , 13 , 17 ,19

Question 15

9.! Here is a list of numbers
6 10 11 16 24 30 40

Write down a multiple of 20
Write down a factor of 12
Write down a prime number

Answer 15

a/ 40
b/ 6
c/ 11

Question 16

Here is a list of 8 numbers.
15 6 17 18 20 22 24 29

Write down a prime number
Write down a factor of 30
Write down a multiple of 3, which is even.

Answer 16

a/ 29
b/ 6 , 15
c/ 14

Question 17

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?

Answer 17

56

Question 18

A blue light flashes every 8 seconds.
! A red light flashes every 12 seconds.
! Both lights have just flashed together.
! After how many seconds will both lights flash together?

Answer 18

24

Question 19

.! Kelly is organizing a barbecue.
She needs bread rolls and burgers.
Bread rolls are sold in packs of 20.
Burgers are sold in packs of 12. !
Kelly buys exactly the same number of bread rolls as burgers.
What is the least number of each pack that Kelly buys?

……………………….. packs of bread rolls
……………………….. packs of burgers

Answer 19

3 packs of. bread rolls

6 packs of burgers

Question 20

factors of 36

Answer 20

1 , 2 ,3 ,4 ,6 , 9 , 12 36

Question 21

factors of 12 and 16

Answer 21

1 ,2 , 4

Question 22

factors of 40

Answer 22

1 2 4 10 20 40