Mathematics Assessment (CfE) - Level 3
(MTH 3 - 05b)
I can apply my understanding of factors to
investigate and identify when a number is prime.
1.
How many factors does a prime number have ?
2.
Which of these bags have prime numbers written on them ?
1
4
9
27
3.
5.
6.
7.
18
39
45
19
93
Write down all the prime numbers between :–
a
4.
33
11
30 and 40
b
60 and 70
c
100 and 110.
Write down TRUE or FALSE for each of the following statements :–
a
Every odd number is a prime number.
b
There are no prime numbers which are even numbers.
c
There are four prime numbers between 10 and 20.
d
One thousand eight hundred and sixty five is NOT a prime number.
Write down which of the following are prime numbers :–
a
135 792
b
three million
c
one million, minus one.
a
Write down the highest common factor (h.c.f.) of 13 and 19.
b
Make a statement about the highest common factor of ANY two prime numbers.
Write each of the following numbers as the product of prime factors :–
(For example, 18 = 2 x 3 x 3 or 50 = 2 x 5 x 5).
a
12
©TeeJay Publishers Feb 2011
b
30
c
Page 1
91
d
500.
Level 3 MTH 3-05b

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