Free Printable Playing with numbers

1.

Which of these is the factor of 50

a)

7

b)

3

c)

10

d)

6

2.

Two numbers having only 1 as a common factor.

a)

Whole number

b)

Co- Prime number

c)

Composite number

d)

Natural number

3.

The HCF of 12 and 16 is

a)

2

b)

4

c)

6

d)

1

4.

The HCF of two consecutive even numbers is

a)

1

b)

2

c)

Smaller number

d)

Bigger number

5.

The HCF of 66,77,88

a)

22

b)

11

c)

66

d)

33

6.

The smallest odd composite number is

a)

3

b)

5

c)

9

d)

15

7.

Which of them is a composite number?

a)

31

b)

13

c)

27

d)

29

8.

The number of multiples of 10 is

a)

10

b)

100

c)

1000

d)

Infinite

9.

Which of the following number is divisible by 2?

a)

6483

b)

2967

c)

7890

d)

1235

10.

A number which is divisible by 9 is also divisible by_____

a)

3

b)

6

c)

11

d)

None of these

11.

Say 'TRUE' or 'FALSE'
The number 3165 is divisible by 9

a)

TRUE

b)

FALSE

12.

THE FOLLOWING NUMBERS ARE ALL __________OF 7?

7,14,21,28,35,42,49,56.........

a)

ANSWERS

b)

NUMBERS

c)

FACTORS

d)

MULTIPLES

13.

WHICH OF THE FOLLOWING IS THE FACTOR PAIR OF 84?

a)

2 AND 21

b)

6 AND 14

c)

3 AND 36

d)

9 AND 7

14.

WHICH OF THE FOLLOWING IS PRIME NUMBERS?

a)

191

b)

82

c)

54

d)

343

15.

THE HCF OF 15 AND 6

a)

5

b)

6

c)

3

d)

2

16.

WHAT IS THE LCM OF 8 AND 10?

a)

2

b)

4

c)

80

d)

40

17.

LIST THE PRIME FACTORIZATION OF 42

a)

$2\times2\times2\times3$

b)

$3\times2\times4$

c)

$2\times3\times7$

d)

$6\times7$

18.

WHAT IS THE LCM OF 3, 5 AND 7?

a)

126

b)

21

c)

105

d)

63

19.

Which of the following is NOT a factor pair of 24?

a)

6 AND 4

b)

12 AND 2

c)

8 AND 4

d)

3 AND 8

20.

Two neon lights are turned on at the same time. One blinks every 4 seconds and the other blinks every 6 seconds. In 60 seconds, how many times will they blink at the same time?

a)

5 times

b)

12 times

c)

24 times

d)

16 times

Playing with numbers

Total questions: 20

Worksheet time: 15mins

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