prime numbers and factor trees

sort the factors of 348

Groups:

(a) not factors

,

(b) factors

• 58

• 8

• 22

• 3

• 14

• 29

• 116

• 2

• 4

• 12

• 174

• 7

• 48

• 1

• 60

• 6

• 55

• 348

• 87

list all the factors of 222

Answer explanation

1,2,3,6,37,74,111,222

match the numbers with its prime factors

• 2x2x2x2x3

• 100

• 2⁶

• 28

• 2x2x2x3x5

• 48

• 2²x5²

• 120

• 2²x7

• 64

write out the prime factors of 60 in index form

Answer explanation

2²x3x5

sort these into prime and composite numbers

Groups:

(a) composite

,

(b) prime

• 13

• 18

• 101

• 10

• 7

• 2

• 5

• 4

• 169

• 37

• 11

• 12

• 99

draw a factor tree of 120

find the HCF of 34 and 48

Mathematical Equivalence

ON

https://www.bbc.co.uk/bitesize/guides/z2dtfcw/revision/7#:~:text=The%20highest%20common%20factor%20is,intersection%20of%20the%20two%20circles.&text=The%20LCM%20is%20found%20by,three%20sections%20of%20the%20circles.

find the LCM of 34 and 48

(need to use a Venn diagram)

also go over Venn diagram rules

Mathematical Equivalence

ON