SPECIAL NUMBERS
1)
Decide if the following statements are true or false:
a) 4 is a factor of 16
b) 3 is a factor of 18
d) 7 is a factor of 28
e) 9 is a factor of 23
2)
List any five multiple of 7.
3)
List any three prime numbers.
4)
Write 66 as a product of its prime factors, in index form.
5)
Give any cube number.
6)
Use the following numbers to answer the questions below:
12
8
6
c) 5 is a factor of 42
21
15
3
a) Write a factor of 9.
b) Write a multiple of 4.
c) Write an even number.
d) Write a prime number.
e) Write an odd number.
f) Write a cube number.
7)
Use the following numbers to answer the questions below:
49
a) Write all the factors of 32.
b) Write all the even numbers.
c) Write all the square numbers.
d) Write all the prime numbers.
e) Write all the multiples of 7.
8)
a)
b)
c)
d)
Write down all six factors of 32.
Write down all six factors of 20.
Write down all nine factors of 36.
Write down all eight factors of 40.
9) Write 42 as a product of its prime factors.
25
13
4
32
10)
Write down all the factors for each of the following numbers:
a) 9
b) 28
c) 26
d) 11
e) 30
f) 50
11)
Write 180 as a product of its prime factors, in index form.
12)
Aron thinks of a number. He says the number is both a square number and a multiple of 7. Which number is he
thinking of?
13)
Using only numbers between 20 and 30.
a) Write a triangular number.
b) Write a square number.
c) Write a cube number.
d) Write a prime number.
e) Write a multiple of 8.
f) Write a factor of 88
14)
Write 244 as a product of its prime factors, in index form
15)
Jean thinks of a number. This number is both a square number and a triangular number. What is the number Jean
is thinking about?
16)
Write 3240 as a product of its prime factors, in index form.
17)
Write 2200 as a product of its prime factors, in index form.