who created decimals?

Decimals were created by the Chinese at the end of 4th century BCE

can you get points for doing good work :\

Do you mean Khan Academy's energy points? If so, yes! You'll get energy points for doing practice problems and watching videos. :)

how do you get this down so fast i cant understand a bit!

Keep trying and you will get it down...like they always say ¨Practice makes perfect:)¨

These seem really easy... am I missing something? If not, I look forward to the unit test! Can you make these a bit harder?

I say don't push your luck. unit tests can get harder and if you do decimals with heart or, as a matter of fact, you do anything with heart it becomes easy.

when was decimals first used in history?🤔

*4th Century BC* The first decimal system was introduced in the 4th Century BC by the Sumerians of Mesopotamia, to whom the invention of writing is credited. They based their numerical system on powers of 60 subdivided into multiples of 10.

Main content

5th grade

Course: 5th grade > Unit 1

Lesson 1: Decimal place value intro

Decimal place value review

Google Classroom

Review decimal place value, and try some practice problems.

Place value chart

The number 87, point, 654 can be placed on a place value chart as follows:

Tens	Ones	.	Tenths	Hundredths	Thousandths
8	7	point	6	5	4

Decimal place value

The first digit after the decimal represents the tenths place. The next digit after the decimal represents the hundredths place. The remaining digits continue to fill in the place values until there are no digits left.

Example: 0, point, 81

The number 0, point, start color #11accd, 8, end color #11accd, start color #1fab54, 1, end color #1fab54 is made up of start color #11accd, 8, end color #11accd tenths and start color #1fab54, 1, end color #1fab54 hundredth.

We can also write this as:

0, point, start color #11accd, 8, end color #11accd, start color #1fab54, 1, end color #1fab54, equals, start color #11accd, 0, point, 8, end color #11accd, plus, start color #1fab54, 0, point, 01, end color #1fab54

0, point, start color #11accd, 8, end color #11accd, start color #1fab54, 1, end color #1fab54, equals, start color #11accd, start fraction, 8, divided by, 10, end fraction, end color #11accd, plus, start color #1fab54, start fraction, 1, divided by, 100, end fraction, end color #1fab54

Or we can use a place value chart:

Ones	.	Tenths	Hundredths
0	point	start color #11accd, 8, end color #11accd	start color #1fab54, 1, end color #1fab54

Want to learn more about decimal place value? Check out this video.

Want to review whole number place value? Check out this article.

Practice

Problem 1

Current

The digit start color #1fab54, 9, end color #1fab54 in which number represents a value of 0, point, 009?

(Choice A)
2, point, 0, start color #1fab54, 9, end color #1fab54, 5
(Choice B)
8, start color #1fab54, 9, end color #1fab54, comma, 653
(Choice C)
0, point, 72, start color #1fab54, 9, end color #1fab54

Want to try more problems like this? Check out these exercises:
Decimal place value names
Value of a decimal digit

Want to join the conversation?

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De La Rosa.Camila
Posted 4 years ago. Direct link to De La Rosa.Camila's post “who created decimals?”
who created decimals?
Button navigates to signup pageComment on De La Rosa.Camila's post “who created decimals?”
(160 votes)
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- Galleta
  Posted 9 months ago. Direct link to Galleta's post “Decimals were created by ...”
  Decimals were created by the Chinese at the end of 4th century BCE
  Comment on Galleta's post “Decimals were created by ...”
  (16 votes)
Gabriella Spiker
Posted 7 years ago. Direct link to Gabriella Spiker's post “how do you get this down ...”
how do you get this down so fast i cant understand a bit!
Button navigates to signup pageComment on Gabriella Spiker's post “how do you get this down ...”
(45 votes)
Answer
- LILYW
  Posted 3 years ago. Direct link to LILYW's post “Keep trying and you will ...”
  Keep trying and you will get it down...like they always say ¨Practice makes perfect:)¨
  Comment on LILYW's post “Keep trying and you will ...”
  (86 votes)
Tyler M
Posted 3 years ago. Direct link to Tyler M's post “can you get points for do...”
can you get points for doing good work
:\
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(52 votes)
Answer
- Evan
  Posted 3 years ago. Direct link to Evan's post “Do you mean Khan Academy'...”
  Do you mean Khan Academy's energy points? If so, yes! You'll get energy points for doing practice problems and watching videos. :)
  Comment on Evan's post “Do you mean Khan Academy'...”
  (50 votes)
Hayden Linyard
Posted 5 years ago. Direct link to Hayden Linyard's post “These seem really easy......”
These seem really easy... am I missing something? If not, I look forward to the unit test! Can you make these a bit harder?
Button navigates to signup pageComment on Hayden Linyard's post “These seem really easy......”
(35 votes)
Answer
- Albatross Prime
  Posted 3 years ago. Direct link to Albatross Prime's post “I say don't push your luc...”
  I say don't push your luck. unit tests can get harder and if you do decimals with heart or, as a matter of fact, you do anything with heart it becomes easy.
  Comment on Albatross Prime's post “I say don't push your luc...”
  (36 votes)
Caroline Thompson
Posted 3 years ago. Direct link to Caroline Thompson's post “when was decimals first u...”
when was decimals first used in history?🤔
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(15 votes)
Answer
- ℙ𝕒𝕥𝕣𝕚𝕔𝕜
  Posted 3 years ago. Direct link to ℙ𝕒𝕥𝕣𝕚𝕔𝕜's post “*4th Century BC* The firs...”
  4th Century BC
  The first decimal system was introduced in the 4th Century BC by the Sumerians of Mesopotamia, to whom the invention of writing is credited. They based their numerical system on powers of 60 subdivided into multiples of 10.
  Comment on ℙ𝕒𝕥𝕣𝕚𝕔𝕜's post “*4th Century BC* The firs...”
  (31 votes)
Jaz
Posted 5 months ago. Direct link to Jaz's post “ngl who else looks in the...”
ngl who else looks in the comments when their bored?💀
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(24 votes)
Answer
- TristanE
  Posted 4 months ago. Direct link to TristanE's post “i do as well”
  i do as well
  Comment on TristanE's post “i do as well”
  (4 votes)
Lucas
Posted 10 months ago. Direct link to Lucas's post “like and subscribe for 10...”
like and subscribe for 10000 years of good luck
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(16 votes)
Answer
- JaceF
  Posted 5 months ago. Direct link to JaceF's post “huh why”
  huh why
  Comment on JaceF's post “huh why”
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shiloh5B
Posted 18 days ago. Direct link to shiloh5B's post “can i have harder work pl...”
can i have harder work please
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(15 votes)
Answer
- CooperM
  Posted 17 days ago. Direct link to CooperM's post “nom nom nom nom nom nom n...”
  nom nom nom nom nom nom nom
  Comment on CooperM's post “nom nom nom nom nom nom n...”
  (9 votes)
kcoombs861
Posted 3 years ago. Direct link to kcoombs861's post “i put in 6 tenths but it ...”
i put in 6 tenths but it says WRONG
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(9 votes)
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- ZoeB
  Posted 6 months ago. Direct link to ZoeB's post “For real tho”
  For real tho
  Comment on ZoeB's post “For real tho”
  (4 votes)
landon.smallwood
Posted 16 days ago. Direct link to landon.smallwood's post “This does not make one bi...”
This does not make one bit of sense because THERE NO VIDEO ON HOW TO WRITE IT SO I GOT TWO WRONG
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- HUGEMASSIVEULTIMATEBIGBRAINKID2023
  Posted 3 days ago. Direct link to HUGEMASSIVEULTIMATEBIGBRAINKID2023's post “Just retry it Np”
  Just retry it Np
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  (2 votes)