Download presentation

Published byDavid Dennison Modified over 2 years ago

1
Place Value A digit is a number 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9 that names a place-value location. For large numbers, digits are separated by commas into groups of three, called periods. Each period has a name: ones, thousands, millions, billions, trillions, and so on. Ones Thousands Millions Billions Trillions PLACE-VALUE CHART Hundreds Tens Ones Thousands Millions Billions Trillions PLACE-VALUE CHART Hundreds Tens 63 billions, 748 millions, 28 thousands, 952 ones Next Slide

2
When a whole number is written using the digits 0 9 it is said to be in the standard form. The position that each digit occupies determines its place value. Example 1. What does the digit 4 mean in each number? a. 4 thousands b. 4 hundred thousands c. 4 billions Solution a. 234,598 b. 456,901 c. 24,355,567,222 Your Turn Problem #1 ,289 ,570 3. 37,218,021,593 Solution What does the digit 7 mean in each number? 1. 7 ten thousands 2. 7 tens 3. 7 billions Next Slide

3
**Writing numbers in expanded notation.**

34,123 = 3 ten thousands + 4 thousands + 1 hundred + 2 tens + 3 ones = 30,000 +4, This number can be written in what is called expanded form, shown below: Standard Notation: 34,123 Example 2. Write 74,289,416 in expanded notation. Answer: 70,000, ,000, , , , Your Turn Problem #2 Write 5,034,319 in expanded notation. Answer: 5,000, , ,

4
**seven hundred eighty-nine**

Writing numbers in words. Procedure: When asked to rewrite a number using words: Proceeding left to right, write in words the number in each period, then write its period name (example: trillion, million, etc...), then write a comma, then proceed to the next period, etc... Note: The period on the right (the last period) has no period name. Notes: 1. Commas are used after each period. 2. The word “and ” is only used for numbers which have decimals. 3. Hyphens are used for the numbers except for the multiples of 10. Examples: 23: twenty-three 57: fifty-seven 40: forty (no hyphen is necessary) Example 3. Write a word name for the following. a) 123 = one hundred twenty-three = fifty-six thousand, seven hundred eighty-nine b) 56, 789 Answers a) 123. b) 56,789. Your Turn Problem #3 b) 3,429,718. a) 9,207 a) Nine thousand, two hundred seven Three million, four hundred twenty-nine thousand, seven hundred eighteen Answers

5
**Example 4a. Three million, two hundred thirty-five thousand, eight hundred eleven**

Writing numbers with digits instead of words Procedure: When asked to rewrite a written number in words into numbers using digits: Proceeding left to right, for each period (separated by commas) write the number using digits and place commas where they are placed in the written form using word. If a period is not written, write “000”, and continue to the next period. Example 4b. Four billion, twenty million, three hundred forty-eight 3, , Solution: 3,235,811 4, , , Solution: 4,020,000,348 Note: 000 is for the thousands period. Your Turn Problem #4 a) One hundred thirty-five thousand, four hundred two b) Four billion, four hundred eight thousand, forty-six b) 4,000,408,046 a) 135,402 Answers The End B.R. 6-1-08

Similar presentations

Presentation is loading. Please wait....

OK

Objective: Read and write numbers through 999,999.

Objective: Read and write numbers through 999,999.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on resources and development Ppt on organ donation in india Ppt on acid-base titration curve Ppt on cross site scripting xss Ppt on peak load pricing model Gas plasma display ppt on tv Ppt on needle stick injury pictures Numeric display ppt on tv Ppt on power system stability studies Ppt on mathematics use in daily life