LCM and HCF

1 x 4

2 x 2

Shows that the factors of 4 are:

1 ; 2 and 4

• True

• False

1 x 4

2 x 4

Show that the multiples are 4 are

1 ; 2 and 4

• True

• False

The following numbers show multiples of 3

3 ; 9 ; 12 ; 15 ; 18 ; 21

• True

• False

The following numbers show factors of 3

3 ; 9 ; 12 ; 15 ; 18 ; 21

• True

• False

Which list of numbers show multiples of 8

• 24 ; 32 ; 40 ; 48 ; 56

• 1 ; 2 ; 4 ; 8

Which list of numbers show factors of 8

• 1 ; 2 ; 4 ; 8

• 8 ; 16 ; 24 ; 32 ; 40

Compare the list multiples of these numbers:

4 = 4; 8; 12; 16; 20; 24; 28; 32; 36; 40

6 = 6; 12; 18; 24; 30; 36; 42; 48; 54; 60

8 = 8; 16; 24; 32; 40; 48; 56; 64; 72; 80

What is the LOWEST common multiple?

Compare the list multiples of these numbers:

3 = 3; 6; 9; 12; 15; 18; 21; 24; 27; 30

6 = 6; 12; 18; 24; 30; 36; 42; 48; 54; 60

9 = 9; 18; 27; 28; 45; 54; 63; 72; 81; 90

What is the LOWEST common multiple?

Compare the multiplication facts for each number below:

16 = 1x16 ; 2x8; 4x4

20 = 1x20 ; 2x10; 4x5

24 = 1x24; 2x12; 3x8; 4x6

Use these multiplication facts to work out the

HIGHEST common factor.

Compare the multiplication facts for each number below:

15 = 1x15 ; 3x5

25 = 1x25 ; 5x5

35 = 1x35; 5x7

Use these multiplication facts to work out the

HIGHEST common factor.