Revision

Which number below is the highest common factor, or HCF, of the numbers 24 and 36?

• 3

• 6

• 12

• 5

How many factors does a Prime number have?

• 1

• 2

• 3

• 4

The number 1 is _______

• A Prime number

• A Composite number

• Both a Prime and Composite number

• Neither a Prime or Composite number

Which of the following is a multiple of 16?

• 64

• 27

• 8

• 88

 

Of the following list of numbers: 2,3,4,7,8,11,12, which are Composite numbers?

• 2,3,4

• 4,11,12

• 2,3,7

• 4,8,12

Which of the following correctly lists the factors of the number 28?

• 1,2,3,4,5

• 1,2,4,7,14,28

• 2,4,7,14

• 1,28

Mr. Schorr has every 3rd day off in November. Mr. Lawson has every 5th day off in November. Which date is the first time Mr. Schorr and Mr. Lawson have a day off together so they can hang out?

• November 9

• November 20

• November 15

• November 30

Which of the following is a prime number?

• 12

• 4

• 7

• 22

Which of the following lists the prime factorization of the number 28?

• 2,2,3

• 2,2,7

• 2,4,6

• 2,14

 

Which of these is not the factor of the number 12?

• 5

• 6

• 12

• 2