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20 questions
Which is a common multiple of 12 and 30?
6
60
4 is a common factor of 26 and 32.
True
False
42 is a common multiple of 7 and 21.
True
False
The factors of 63 are:
1, 3, 7, 9, 21, 63
1, 3, 7, 9, 31, 63
What are the prime numbers between 20 and 30?
23, 29
21, 23, 29
21, 23, 27, 29
21, 23, 25, 29
True or False
The number 7 is prime.
True
False
True or False
The number 8 has four factors.
True
False
True or False
The number 3 is a factor of 24.
True
False
Tick the prime numbers
2
6
3
7
11
The LCM (lowest common multiple) of 5 and 2 is
8
5
6
10
The HCF (highest common factor) of 10 and 12 is
5
2
If you were stacking blocks to represent 4 x 4 = 16, what shape would you make with the blocks?
A circle
A square
A rectangle
A triangle
If you were stacking blocks to represent 2 x 7 = 14, what shape would you make with the blocks?
A circle
A square
A rectangle
A triangle
pick the prime number from the given list.
3
4
6
9
Choose one prime number.
1
2
4
6
Choose a prime number from the list.
7
8
9
10
Which is not a factor of 24?
2
3
4
5
What is the product of 4 and 6?
46
24
48
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