CBSE Class 3 Mathematics Square Root Worksheet

Square number.

The index of a number shows how many times the base is multiplied by itself.

1,4,9,1000 are square numbers. Example:

Exponent and expanded form

Look at the patterns below what are the values of

2¹, 2⁰ , 10¹  ,10⁰

Prime and Composite Numbers.

Counting numbers (except 1) can be divided into two groups.

1.Numbers having only two factors (prime numbers).

2.Numbers having more than two factors (composite numbers)

Exercise1

Answer the following questions.

1.Find the value.

3⁰ =__________

12¹ =__________

10¹ =__________

16¹ =__________

7⁰ =__________

2.Write 4,062,035 in expanded form with exponents.

3.Write (2 x 10⁶) + (4 x 10⁵) + (7 x 10³) + (9 x 10¹) +( 5 x 10⁰) in standard from.

4..Write in expanded form with exponents.

1.734,261 =_________________________________________________

2.15,934 =_________________________________________________

3.127,803 =_________________________________________________

4.25,000,005 =_________________________________________________

5.396,047 =_________________________________________________

5.Write in standard form.

(4 x 10⁶) +( 5 x 10⁵) + (1 x 10³) + (2 x 10¹) + (9 x 10⁰) =________________

(1 x 10⁶) + (7 x 10⁴) + (4 x 10³) + (2 x 10⁰) =________________

(2 x 10⁵) + (4 x 10⁴) + (9 x 10²) =________________.

6.Complete the table.

• The only even prime number is_________.

• How many prime numbers are there between 1 and 20?

• How many prime numbers are there between 1 and 50?

• List the prime numbers between 1 and 20.

• List the composite numbers between 1 and 2

• What is the smallest prime number? _____________

• What is the smallest composite number?

• Is 1 prime or composite number? ____________________

• Write <, >, or = for each.

6⁰ ____ 2⁰

10³  ____ 2 ¹⁰

1⁷ ____ 7¹

10² ____ 100

1⁰ ____ 1¹

Working Space

Q1. 48 sweets are to be shared equally among

3 boys. How many sweets will each boy get?

Ans. Each boy will get sweets.

Q2. 246 steps were painted in 6 different colours.

How many steps will have the same colour?

Ans.________________________________

Q3. 91 biscuits are shared equally by 7 friends.

How many biscuits will each friend get?

Ans.________________________________