N2 Number-Word-Number Conversion

Expressing Numbers in Words

(1) Numbers can be expressed in words using hundreds, thousands and millions.

(2) The last number to be written must be preceded by an ‘and’.

Example       

                        2 7 8 is two hundred and seventy-eight

 5 6 0 8 is five thousand six hundred and eight

4 5 6 70 is forty-five thousand six hundred and seventy

Method 1 – Grouping 

Example: Write 8765432 in words

Step 1: Separate numbers from right to left, 3 numbers in one group

Step2: Fill From left to right:

-         first underline is for hundred,

-         second underline is for thousand

-         third underline is for million

Step3: Write the word

Method 2: Place-Value-Table 

A place-value table can be drawn to teach placement of values and word notations. 

There are 4 main blocks to the place-value table:

(1) millions, 

(2) thousands

(3) hundreds and 

(4) decimals.

Within each block, it is further divided into hundreds, tens and ones. 

A given number is to be written onto the place value table from the right to left. 

Example: 

Write 930527 in words

Step1: Draw/Fill ‘9’,’3’,’0’,’5’,’3’,’7’ from the right to the left. 

Step2: READ the number from left to right, and including the word at every end of 

Method 3 : Writing 'Place Value Table' Title

Method 3 : Writing 'Place Value Table - PVT' Title

h t o (M)    h t o (T)      h t o

                     ^                ^       ^ ^ ^

  (millions  thousands  hundreds tens ones)

Example

Write 1459 in words

h t o (M)    h t o (T)      h t o          
       1      4 5  9                            Step 1: Write and fill in number                    

One thousand four hundred and fifty-nine    Step 2 : Write from left to right

Example: Write 1498012 in words
h t o (M)    h t o (T)      h t o            
      1          4 9 8          0 1 2                       Step 1: Write and fill in number   

Step 2: Write from left to right

  One million four hundred nine eight thousand and twelve  

Practice: 

Write the following in words : (a) 2930     (b) 47084     (c) 106507

{Ensure that the spellings are correct}

FROM WORDS TO NUMBER

METHOD1 (PVT)

Convert eight million seven hundred and sixty-five thousand four hundred and thirty-two to numbers

Step1: Underline hundred, thousand and million and write PVT in line with words 

            h t o (M)                                               h t o (T)             h t o

           eight million seven hundred and sixty-five thousand four hundred and thirty-two

Step 2: Convert words to number Fill in numbers from right to left

            h t o (M)                                               h t o (T)             h t o

         eight million seven hundred and sixty-five thousand four hundred and thirty-two

                8 (3rd)                                            765 (2nd )          432 (1st to convert)

Step 3: Answer : 8,765,432

METHOD2

Example           

Write Eight million, seven hundred and sixty-five thousand, four hundred and      thirty-two in number form.

 Step 1: Underline keywords – “Million’ (if any), ‘thousand’ 

 Step 2: Circle words before keywords ‘Million’, ‘thousand’ and the last group.

      8           ,                                 765                              ,                         432

Step 3: Write numbers below the circle, and put a comma for the underline words. 

Answer: 8,765,432

                 ~~~~ END ~~~~ :)