Quiz unit 1

• 6,991

• 6,961

• 7,896

• 6,951

• 3,831 R15

• 4,830 R16

• 3,830 R17

• 5,380 R18

A composite number ...

• has more than 2 factors.
• has one factor.
• has at least 10 factors.
• is always a really big number.

Write 105 as a product of its prime factors.

• 3x5x7
• 15x7 
• 3x35
• 2x5x7

LCM of two prime numbers is their

• sum

• difference

• product

• quotient

LCM of 36 and 72 is

• 36

• 72

• 108

• 2

Which pair of numbers has a GCF of 8?

• 8, 36

• 40, 80

• 16, 56

• 24, 42

What is the GCF of 9 and 15?

• 1

• 3

• 6

• 8

This Venn diagram represents a year 11 class.

what is the G.C.F?

(a)  

This Venn diagram represents a year 11 class.

what is the L.C.M?

(a)