1. Math Unit Two Lesson Two
Numbers through 100,000,000
Math Unit Two Lesson Two

2. Objective: What will I learn today?
Use the standard form and word form of a number up to 100,000,000.
Read a number aloud up to 100,000,000.

3. What is standard form?
Standard form is the regular way you would write a number. 345,678 1,578,263 12,345,600

4. Write a number in Standard Form

5. Word Form
When we write a number in word form, we write out the words for that number
Seventy-two thousand, three hundred eighty-six
Ten million, three hundred twenty-one thousand, five hundred seventeen
Eighty-five

6. Write a number in word form

7. Standard Form Word Form

8. How do we read a number?

9. How do we read a number?

10. How do we read a number?

11. How do we write the word form of a number?
Step one-read the number either out loud or in your head. Step two- write the words that match what your are saying

12. How do we use word form?

13. How do we use word form?

14. Word form to standard form
Six million, two hundred seventy-five thousand, one hundred three

15. Word form to standard form
Thirty-four million, five hundred sixty thousand, eight hundred twenty-two

16. Nine million, six hundred fifty-six thousand, three hundred sixteen1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

17. Check-Up! Choose the word form of the number.
6,601,490
A. six million, six hundred ten thousand, one hundred forty-three
B. six million, six hundred thousand, one hundred ninety
C. six million, six hundred one thousand, four hundred ninety
D. sixty million, six hundred one thousand, four hundred ninety

18. Check-Up! Choose the word form of the number. 45,600,000
A. forty-five million, sixty thousand
C. forty-five million, sixty
B. forty-five million, six hundred thousand
D. forty-five million, six thousand

19. Check-Up!
There were twenty-seven million, four hundred forty thousand, three hundred twenty-one aliens on planet Zodar. What is the standard form of this number?
27,440
27,443,021
2,700,432
27,440,321

20. Check-Up!
Sixty-six million, nine hundred thirty-one thousand, seventy doughnuts were sold at Dunkin Donuts last year. What is the standard form of this number?
66,931
66,931,070
6,931,070
66,931,700