Download Factors Multiples Primes

1. From the numbers in the rectangle write down all of the:
i)
ii)
iii)
iv)
odd numbers,
numbers that are factors of 72,
numbers that are multiples of 9,
prime numbers.
(4 marks)
2. Write down all the common factors of 10 and 15.
(2 marks)
3. (a) Here is a list of numbers.
4 6 8 9 10 11 12
(i) Write down a prime number from the list.
(ii) Write down a cube number from the list.
(b) Calculate 23 x 52
(1 mark)
(1 mark)
(2 marks)
4. a) Write 18 as the product of its prime factors.
b)What is the LCM of 12 and 18?
(2 marks)
(1 mark)
5. a) Write 28 as the product of its prime factors.
b)Find the LCM of 28 and 42.
(2 marks)
(2 marks)
6.
a)
b)
c)
d)
e)
(5 marks)
Write the reciprocal of these numbers
5
⅜
0.9
4⅓
0.15
7. P is a prime number. Q is an odd number.
State whether each of the following is always odd or always even or could be either odd
or even.
Tick the appropriate statement.
(a) P(Q + 1)
Always odd
Always even
Could be either odd or even
(1 mark)
Always even
Could be either odd or even
(1 mark)
(b) Q – P
Always odd