Numbers

Tens and Ones for Class 1 Maths

The students will learn about the place value of tens and ones in a number. Also, they will get to know about the misconceptions related to place value.

The discussion in this learning concept is about

• What is place value
• Place value order
• Place value 2 digit number

The concept is explained with examples, and illustrations and a concept map are given to summarize the idea. At the end of the page, two printable tens and one's worksheets with solutions are attached for Class 1 maths students to practice.

Tens and Ones

A number can be made of a single digit, two digits, or more than two digits.

If a number is made of two digits, we group the number in Tens and Ones to make the counting/calculations easier.

Example

Answer: 94 books can be grouped in tens and ones as follows:

Now he can count the number of books as:

So, there are 90 books in 9 groups, adding remaining 4 individual books it will give:

90 books and 4 books = 94 books

What Is Place Value

• When we have more than 9 items, write them in two columns ‘Tens’ and ‘Ones’.
• In the Tens column we write down how many "tens" we have, followed by the remaining items in the ones column.

• A ‘Ten’ indicates bundle or group of 10 individuals or singles.
• 1 Object = 1 Ones
• 10 Ones = 1 Ten
• If there is a group of 10 Tens, we call it Hundreds.
• 10 Tens = 1 Hundred

Place Value Order

Ones, Tens and Hundreds from right to left are written as follows.

• Place value of One-digit numbers

• All One-digit numbers are smaller than 10. A single digit number cannot make a group of 10.

Place Value 2 Digit Numbers

• The number 10 is the first and the smallest two-digit number.

Let’s take 10 pencils.

Now make a group of 10 pencils.

• We can make only 1 group. It represents 1 Ten. But there is no single pencil remaining. It indicates 0 ones.
• So, the number 10 can write as:

Similarly, we can write representation of the all two-digits numbers.

Example

• If we take 21 pencils, we can make 2 groups of 10 pencils that can be represented as 2 Tens.
• 1 remaining pencil can be represented as 1 Ones.


2 Tens and 1 Ones = 21

• We can write 21 as:

What Is the Place Value of 100

We can represent 100 as 10 groups of Tens.

We cannot write 100 as:

We use the hundreds place. The number 100 is written as:

100 is the first and smallest three-digit number.

Misconception:

Do not write the numbers at the place value table from the left. If we have to write the numbers 7, 12 and 70. Don’t write as:

The correct way is: Always write the numbers from right to left.