A Million How much is that???. Some examples of real-life ‘millions of things’??
-
Upload
osborne-miller -
Category
Documents
-
view
220 -
download
0
Transcript of A Million How much is that???. Some examples of real-life ‘millions of things’??
![Page 1: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/1.jpg)
A MillionHow much is that???
![Page 2: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/2.jpg)
Some examples of real-life ‘millions of things’??
![Page 3: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/3.jpg)
94, 767, 083
• This is the number of copies of the Guinness Book of World Records sold from 1955 to 2002
• How do we know what this number is? How do we know how to read it?– – – –
![Page 4: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/4.jpg)
Suppose we try to put that number into a chart:94, 767, 083
![Page 5: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/5.jpg)
This is an example of a ‘place-value chart’
The following patterns help you understand large whole numbers:
- From right to left, each group of 3 place values in called a period.
- In each period, the digits of a number are read as hundreds(H), tens(T), and ones(O).
- Each position represents 10 times as many as the position to its right.
![Page 6: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/6.jpg)
This place-value chart shows a record for the # of items in the world’s largest collection of matchbook covers –
3,159,119
We read this number as:Three million one hundred and fifty-nine thousand one hundred nineteen
![Page 7: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/7.jpg)
We can write this number in three different forms:
• Standard form: 3 159 119** Notice we leave a space between the periods when we write
a number with 5 or more digits
• Expanded form: 3 000 000 + 100 000 + 50 000 + 9000 + 100 + 10 + 9
• Number-word form: 3 million 159 thousand 119
![Page 8: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/8.jpg)
Any place value chart can be extended to the left to show greater whole numbers.
We write : 50 000 100 000 000We say: fifty trillion one hundred million
![Page 9: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/9.jpg)
Practice Questions:
Handout
![Page 10: A Million How much is that???. Some examples of real-life ‘millions of things’??](https://reader036.fdocuments.in/reader036/viewer/2022082713/5697c0291a28abf838cd757f/html5/thumbnails/10.jpg)
Number Forms:
• Standard Form – the actual number in digits only
• Expanded Form – the number as the sum of the values of its digits
• (e.g. 43 432 = 40 000 + 3000 + 400 + 30 + 2)• Number-Word Form– a combination of
number and words (e.g. 4 million, 546 thousand, 409)