Introduction to numbers

Places names and periods

number = 567,862,593,142
representation = hundred billions - ten billions - billions | hundred millions - ten millions - millions | hundred thousands - ten thousands - one thousands | hundreds | ten | one

• the number makes more big from right to left.

Period

• Is the part where the group are three numbers.
• The periods are separated by comas

So we have:

million period, thousand period, one period

its a good idea to memorize this:

Each period have this three
one million     | one thousand     | one 
ten million     | ten thousand     | ten 
hundred million | hundred thousand | hundred 

problems to practice

name the place and place value of each underlined digit

1. one thousand - 2,000
2. ones - 6
3. tens - 30
4. hundreds - 800
5. ten thousands - 90,000
6. ten million - 30,000,000
7. one - 6
8. one thousand - 2000
9. ten - 50
10. ten thousand - 0
11. one million - 3,000,000
12. one billion - 6,000,000,000

Inequality Notation

• we have three symbols
  • “>” greater than
  • “<” smallest than
  • “=” equiality

examples

• 36,420 < 37,000
• 2,987 < 2,999
• 807 = 807

standard form and word form

50 = fifty

standard form = 7,862,593,142
word form = seven billion eight hundred sixty-two million five hundred ninety-three thousand one hundred fourty two

practice

According https://www.youtube.com/watch?v=sXiXyoT06ys&list=PLm2VEQtiYjhpTTgxTVCXVcpYWDUqiewiQ&index=3&t=2143s

write the numbers in word form

1. three thousand six hundred seventy-eight
2. fourty two thousand nine hundred fifteen
3. one hundred twenty-two thousand five hundred seventy-five
4. six million eight hundred fifty - three thousand two hundred ninty - nine
5. five thousand seven hundred sixty-one
6. twenty - three thousand eight hundred seventy - four
7. seven hundred seven thousand five hundred sixty - three
8. nine million six hundred thousand five hundred one
9. seventy thousand sixty
10. eight millon one thousand
11. five million twenty thousand three hundred

write the numbers in standard form

11. 5
12. 72
13. 856
14. 9
15. 43
16. 121
17. 2,864
18. 58,719
19. 58,709
20. 603
21. 89,577
22. 5,350,640
23. 5,305,604
24. 348,308,348,308
25. 97,907,997,907
26. 20,000,003
27. 10,800,000,001

homework

1. hundreds place - 600
2. ones place - 3
3. tens place - 0
4. billion place - 8,000,000,000
5. million place - 3,000,000
6. ten thousand place - 80,000
7. hundred millions place - 600,000,000
8. “<”
9. “<”
10. “>”
11. “<”
12. “>”
13. “>”
14. “=”
15. “<”
16. “<”
17. “>”
18. ninety - six
19. ninety
20. eight hundred seventy - six
21. five thousand seven hundred fourty
22. five thousand seven hundred four
23. seventy - two thousand three hundred sixty
24. three billion eight hundred sixty million eight hundred six thousand four hundred
25. 76
26. 894
27. 45,321
28. 12,906,960,906
29. 13,000,073,036