** NUMBER PRESENTATION **

** Figure to Words**

We will now look at how to write numbers in words. The knowledge of Place Value learnt in the previous section is very important here. Before we start writing larger numbers, we will look at how to write the simple ones first.

Figure |
Words |

1 |
One |

2 |
Two |

3 |
Three |

4 |
Four |

5 |
Five |

6 |
Six |

7 |
Seven |

8 |
Eight |

9 |
Nine |

10 |
Ten |

11 |
Eleven |

12 |
Twelve |

13 |
Thirteen |

14 |
Fourteen |

15 |
Fifteen |

16 |
sixteen |

17 |
Seventeen |

18 |
Eighteen |

19 |
Nineteen |

20 |
Twenty |

21 |
Twenty-one |

32 |
Thirty-two |

40 |
Forty |

43 |
Forty-three |

54 |
Fifty-four |

65 |
Sixty-five |

76 |
Seventy-six |

89 |
Eighty-Nine |

90 |
Ninety |

92 |
Ninety-two |

98 |
Ninety-eight |

100 |
One hundred |

105 |
One hundred and five |

184 |
One hundred and eighty-four |

637 |
six hundred and thirty-seven |

648 |
Two hundred and forty-eight |

953 |
Nine hundred and fifty-three |

1000 |
One Thousand. |

NOTE:

1. there is always a hyphen between the tens and units spelling.

2. there is no **u** in the spelling of 4 in the tens position.

Having known these little numbers, they will form the bedrock with which we write larger numbers. Also, note that the number of digits at the back of each group help to determine the place value for the group.

3 digits - Thousand

6 digits - Million

9 digits - billion

12 digits - Trillion

15 digits - Quadrillion

18 digits – Quintillion

21 digits - Sextillion

24 digits - Septillion

27 digits - Octillion

30 digits - Nonillion

** Example**

Write the numbers below in words:

** 1. 13528**

**divide the number with comma into groups of 3 digits starting from the right and counting to the left.

13,528

**write the first group - *thirteen *and its place value *thousand* since it has 3 digits at the back.

**write the next group - *five hundred and twenty-eight*

Combining the two, we have *thirteen thousand, five hundred and twenty-eight *

**2. 3752849**

Group in 3

3,752,849

** in group one, we have only *three, *since there are 6 digits at the back, it is *million**.*

** group two has *seven hundred and fifty-two*, it is ** thousand** since there are 3 digits at the back.

** group three, *eight hundred and forty-nine*. There are no digits at the back of the group, so no place value is called with it.

When combined

*Three million, seven hundred and fifty-two thousand, eight hundred and forty-nine. *

**3. 120000010345 **

** **Start by Grouping the numbers in three

120,000,010,345

** group one, *one hundred and twenty* **billion**, (9 digits at the back of the group)

**group two has 000, nothing will be pronounced here.

**group three has 010, which is *ten ***thousand **(3 digits at the back of the group)

**last group *three hundred and forty-five*

The combined pronunciation will be:

*One hundred and twenty billion, ten thousand, three hundred and forty-five.*

One more example before we go.

Write 61246837200389 in words.

61,246,837,200,389

*Thirty-one trillion, two hundred and forty-six billion, eight hundred and thirty-seven million, two hundred thousand, three hundred and eighty-nine.*

NOTE:

- You can only group in threes.
- Always place a comma after writing each group.
- Always place a hyphen between the tens and the unit digit.

** **

** EXERCISE C**

Write the following numbers in words:

1. 635382

2. 347272934

3. 42000040

4. 537280309200830

5. 10000030240002

6. 7290367392093286

7. 3484304858502

8. 9048839003845

9. 444954944394

10. 2340002030300

When it involves decimal numbers, we write the digits after the decimal point singly. E.g.

Write 23552437.4538 in words

Note, the whole part of the number ends before the decimal point, so we start grouping from there.

23,552,437.4538

* Twenty-three million, five hundred and fifty-two thousand, four hundred and thirty-seven point four, five, three, eight.*

** Words to Figure**

Here we will look at how to write in figures numbers already written in words.

__Example__

Write the numbers below in figure:

* * 1.* Six hundred and fifty-two million, thirty-five thousand, four hundred and forty-six.*

__Solution__

*Six hundred and fifty-two* – 652. Million means there are six digits at the back, so we create spaces for six digits of three groups separated by commas.

652, _ _ _ , _ _ _

*Thirty-five thousand* – 35. Since this is a two-digit figure, we make it three digits by putting 0 at the front to become 035.

6 5 2,__0__ __3__ __5__, _ _ _

*Four hundred and forty-six *– 446.

6 5 2, __0__ __3__ __5__, __4__ __4__ __6__.

Therefore our number is 652,035,446.

* * 2.* Twenty-five trillion, eight hundred and sixty-eight billion, four hundred and ninety-one thousand and eleven.*

__Solution__

*Twenty-five trillion* – 25, _ _ _, _ _ _, _ _ _, _ _ _

*Eight hundred and sixty-eight billion* – 25, __8__ __6__ __8__, _ _ _, _ _ _, _ _ _

No million, so we put 0 0 0 in the group – 25, __8__ __6__ __8__, __0__ __0__ __0__, _ _ _, _ _ _

*Four hundred and ninety-one thousand* – 25, __8__ __6__ __8__, __0__ __0__ __0__, __4__ __9__ __1__, _ _ _

*Eleven, *since 11 has two digits, put 0 in front to make it 3 –

25, __8__ __6__ __8__, __0__ __0__ __0__, __4__ __9__ __1__, __0__ __1__ __1__

Therefore, our number is 25, 8 6 8, 0 0 0, 4 9 1, 0 1 1

** EXERCISE D**

Write the following numbers in figure.* *

* 1. Sixty-five billion, twelve million, two hundred thousand and fifty-one. *

* 2. Three hundred and twelve trillion, eight hundred and four billion, seventy-six million, one hundred and two thousand, six hundred and twenty.*

* 3. Twelve quadrillion, two trillion, four hundred and forty-one thousand and fifty-six. *

* 4. Fifty-three billion and sixty-five. *

* 5. Nine hundred and two million, ten thousand, one hundred and thirteen. *

* 6. Two billion, fifty-one million, three hundred and twenty-one thousand, one hundred and thirty-six. *

* 7. One hundred and fourteen trillion, two hundred and forty-one billion, five hundred thousand, eight hundred and twenty-two. *

* 8. Twenty-three **quintillion, three hundred and five quadrillion, eight hundred and one trillion, five hundred and thirty-two million, three hundred thousand and eighteen. *

* 9. T**welve trillion, twelve billion, two million, forty-one thousand, one hundred and thirteen. *

* 10. One hundred and twenty-three billion, four hundred and fifty-six million, seven hundred and eighty-nine thousand. ** *

**PRE: **PLACE VALUE

**NEXT: **ROMAN FIGURE