Visual Worksheet: Prime Factorisation (with Solutions) | Mathematics (Maths) Class 10 PDF Download

 Page 1


Prime factor tree 
E x a m p l e
Write the factors on each branch to complete a prime factor tree.
 Write the factors on each branch to complete a prime factor tree. E x e r c i s e :
a .
8
b .
20
c .
18
d .
30
f . 24 e .
27
16
8 2
4 2
2 2
At the end of the branch, the
numbers are prime. 
16 = 2 x 2 x 2 x 2
Page 2


Prime factor tree 
E x a m p l e
Write the factors on each branch to complete a prime factor tree.
 Write the factors on each branch to complete a prime factor tree. E x e r c i s e :
a .
8
b .
20
c .
18
d .
30
f . 24 e .
27
16
8 2
4 2
2 2
At the end of the branch, the
numbers are prime. 
16 = 2 x 2 x 2 x 2
Prime factor tree 
 Write the factors on each branch to complete a prime factor tree. E x e r c i s e :
a .
8
b .
20
c .
18
d .
30
f . 24 e .
27
Answer key
4 2
2 2
4 5
2 2
2 9
3 3
3 10
5 2
9 3
2
3 3
12
4 3
2 2
8 = 2 x 2 x 2 20 = 2 x 2 x 5 18 = 2 x 3 x 3
20 = 2 x 3 x 5 27 = 3 x 3 x 3 24 = 2 x 2 x 2 x 3
E x a m p l e
Write the factors on each branch to complete a prime factor tree.
16
8 2
4 2
2 2
At the end of the branch, the
numbers are prime. 
16 = 2 x 2 x 2 x 2