Module 3 Chapter 1

Integers

Which is a factor of 20?

a) 3b) 7c) 12d) 5e) 40

Which is a factor of 15?

A) 2

B) 4

C) 10

D) 12

E) 3

Which is a factor of 21?

A) 7

B) 20

C) 2

D) 5

E) 63

Which is a factor of 24 & 30 ?

A)10B)8C)12D)6E)7

Which is a factor of 12 & 16 ?

A) 5B) 3C) 4D) 8E) 20

What is the Highest Common Factor of 20 & 30 ?

(The biggest number that is a factor of both 20 and 30)

What is the Highest Common Factor of 22 & 55 ?

(The biggest number that is a factor of both 22 and 55)

What is the Highest Common Factor of 24 & 32 ?

(The biggest number that is a factor of both 24 and 32)

A multiple of 20

A) 30

B) 60

C) 45

D) 90

E) 362

A multiple of 5 & 7

A) 20

B) 60

C) 35

D) 12

E) 15

A multiple of 10 & 15

A) 5

B) 10

C) 25

D) 30

E) 45

Find the Lowest Common Multiple of 6 & 8

( The smallest number that appears in both the 6 and 8 times table)

Find the Lowest Common Multiple of 3 & 4

(the smallest number that appears in both the 3 and 4 times tables)

Find the Lowest Common Multiple of 6 & 9

(the smallest number that appears in both the 6 and 9 times tables)

Give your answers as fractions

What is the reciprocal of 4?

What is the reciprocal of 6?