Online Test — Factors & Multiples
10 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 10
easy
Which number is COMPOSITE?
7
13
9
5
Explanation: 9 = 1, 3, 9, so it has more than two factors.
Question 2 of 10
medium
Is 1 prime or composite?
prime
composite
neither
both
Explanation: 1 has only one factor, so it is neither.
Question 3 of 10
hard
How many factors does 16 have?
3
4
5
6
Explanation: 1, 2, 4, 8, 16 → five factors.
Question 4 of 10
easy
The only even prime number is…
2
4
6
0
Explanation: 2 is the only even prime.
Question 5 of 10
hard
Which is a common multiple of 3, 4 and 6?
12
9
8
10
Explanation: 12 is divisible by 3, 4 and 6.
Question 6 of 10
medium
The smallest prime number is…
0
1
2
3
Explanation: 2 is the smallest prime.
Question 7 of 10
medium
Is 20 a multiple of 5?
Yes
No
Only sometimes
Cannot tell
Explanation: 5 × 4 = 20, so yes.
Question 8 of 10
medium
The smallest common multiple of 3 and 5 is…
8
15
30
10
Explanation: 15 is the first common multiple.
Question 9 of 10
easy
A common multiple of two numbers is in…
both their times tables
neither table
only the bigger table
the factor list
Explanation: It appears in both numbers' multiples.
Question 10 of 10
medium
Which number is a factor of BOTH 6 and 9?
2
3
6
9
Explanation: 3 divides both 6 and 9.