# Q2 MATHEMATICS 4- FACTORS, MULTIPLES, PRIME AND COMPOSITE NUMBER

## Quiz by Christine Jerenlou Pedroso

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- Q1
Which are the common factors of 36 and 42?

1, 2, 3, 6, 7

1, 2, 3, 4 ,6

1, 2, 4, 6

1, 2, 3, 6

300s - Q2
Which two numbers have 6 as their factor?

12 and 18

16 and 20

16 and 18

12 and 16

300s - Q3
What number is missing in the factor tree below?

3

2

7

4

300s - Q4
Which number has the prime factor 3?

97

87

67

77

300s - Q5
Which of the following is equal to 45?

3 x 3 x 5

2 x 3 x 5

2 x 5 x 7

3 x 5 x 7

300s - Q6
These are numbers with only two factors, itself and 1.

Multiples

Factors

Composite

Prime

300s - Q7
Which of the following is a composite number?

47

43

49

41

300s - Q8
Which set is composed of prime numbers only?

13, 19, 23, 25

13, 17, 19, 21

13, 17, 19, 23

13, 15, 17, 19

300s - Q9
The prime numbers 13 and 31 are called reverse primes. Which of the following are reverse primes?

41 and 14

37 and 73

21 and 12

51 and 15

300s - Q10
What is the product of the least two 2 – digit prime numbers?

165

143

187

132

300s