What are Number Names?
Number names allow us to write numbers in English. Number names are numbers that are expressed in a word format of how we read the numbers. It is also important to learn these names with the correct spellings. Expressing a number in words is based upon the place value of the digits in the number.
We should first learn how to write number names for numbers 1 to 10. We can then move on to names of the numbers from 11 to 20, 21 to 30 and so on.
Numbers Names for Numbers 1 to 10
The number names for numbers 1 to 10 are:
- One for 1
- Two for 2
- Three for 3
- Four for 4
- Five for 5
- Six for 6
- Seven for 7
- Eight for 8
- Nine for 9
- Ten for 10
The number names of all the numbers are based upon the place value of the digits in the number. Here the numbers from 1 to 9 are one digit numbers, that is, one’s place value and 10 is a two digit number where 1 is at tens place and 0 is at one’s place. Now let’s look at the number names for 11 to 50.
Number Names for 11 to 50
The chart below shows the number names for 11 to 50.
Number Names and Place Value
In order to write any number in words it is important to have a good understanding of place values.
Depending on the placement of digits in a number, their positional value can be expressed in words. For instance, depending on where the number 1 is positioned, the first two place values can be expressed as:
- 1 – ones place
- 10 – tens place
If we look at the chart, in the number 21 the tens place digit is 2 and the ones place digit is 1. So the number is written as ‘Twenty One’. Similarly ‘Thirty One’ for 31, ‘Forty Two’ for 42, and so on.
How can we Memorize Number Names?
We can use a few tricks to memorize the names of some numbers.
For instance, if we talk about numbers from 13 to 19, we can observe a pattern in their names, which is, number + teen. For example, Thir + teen for 13, Four + teen for 14 and so on.
Now for numbers from 21 to 29 the pattern is twenty + number. For example, Twenty + One for 21, Twenty + Two for 22 and so on. This same pattern exists for numbers 31 to 39 and 41 to 49.
Rapid Recall
Solved Examples
Example 1: What do we call the number 25?
Solution:
The number 25 can be expressed or read as twenty-five.
Example 2: Solve the given expression and write it down in words 50 + 8 – (23 + 12)
Solution:
= 50 + 8 – (23 + 12) Writing the expression
= 50 + 8 – 35 Simplify the expression inside the parentheses
= 23 Simplify
Thus, the number 23 in words is twenty-three.
Example 3: Find the solution of (thirty-three) – (twenty-nine).
Solution:
Thirty-three is represented by the number 33, while twenty-nine is represented by the number 29.
So,
= (33 – 29)
= 4
Therefore, the solution of (thirty-three) – (twenty-nine) is four.
Read the number from left to right and then write it in words using the appropriate place value.
The word sixty is used to write and this represents the number 60.
In mathematics, a number can be expressed in words by using its name. For instance, 20 can be expressed or read as twenty.
The number names from 21 to 30 are:
21 – Twenty-one, 22 – Twenty-two, 23 – Twenty-three, 24 – Twenty-four, 25 – Twenty-five, 26 – Twenty-six, 27 – Twenty-seven, 28 – Twenty-eight, 29 – Twenty-nine, 30 -Thirty.