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### Course: MAP Recommended Practice>Unit 42

Lesson 6: Comparing decimals

# Ordering decimals

Practice comparing decimals and learning how to order numbers with decimals from least to greatest. Learn about the importance of examining each decimal place, starting from the left (the largest place value) and moving rightwards.

## Want to join the conversation?

• Maths is hard i dont get it l o l
• Why does this have 48 votes?
(1 vote)
• Every time we go down one place value is that number always ten times less than the number before it. And what is the point of having a decimal point if every value is either 10 times less or more?
• Using a decimal point is a way to write a number that has fractional place values such as tenths, hundredths, thousandths, and so on. Without the decimal point, the only place values are whole-number place values such as ones, tens, hundreds, thousands, and so on.
• This video teached me a lot of stuff!
• I’m glad you learned a lot from the video about ordering decimals.

The basic idea is that decimal points should be lined up first, and columns farther to the left are more important because of their higher place values.
• i am confused about decimals?
• Decimals are just like normal numbers, except they have a precision that's greater than we can express without a decimal point and places. The amount of zeroes to the left of the decimal shows us how small it is, and the zeroes to the right of the numbers don't really matter. This is very similar to whole numbers, where the zeroes to the left don't matter and the zeroes to the right of the value tell us the size of the number. Operations with decimals work the same as with normal numbers.
• dose any one use khan academy any more?
• what comes after the thousandths place
• tldr: ten thousandths

The places are similar to the place values on the left of the decimal place, but the difference is that the place values to the right do not have a "oneths" place value and instead begins at the tenths; the other difference is that the names just add the 'ths' ending.

So, if the place values on the right side of the decimal are: ones, tens, hundreds, thousands, ten thousands, hundred thousands, millions, ten millions, etc.

Then the place values to the right side of the decimal are: tenths, hundredths, thousandths, ten thousandths, hundred thousandths, millionths, ten millionths, etc.
• I'm done what do I do?
• go to next videos
(1 vote)
• How do you order uneven numbers like 4.56 4.39 8.79 3.3 from least to greatest
(1 vote)
• Hi, so to order decimal numbers I will show you an example. To see which order 4.56, 4.39, 8.79, and 3.3 go you have to see which whole numbers are the lowest. We know that 3.3 is the lowest out of 4.56, 4.39 and 8.79 because the whole number 3 is greater than 4 and 8. Next we check to see which is the smallest out of 4.56, 4.39 and 8.79. We know that 4.56 and 4.39 are smaller than 8.79 because 4 is smaller than 8. Now we check and see which is the smallest out 4.56 and 4.39. Since the whole number in both numbers are 4 we check to see which number is bigger behind the decimal. To check which numbers behind the decimal are bigger we have to check the number right after the decimal. So in 4.56 the number behind the decimal is 5 and in 4.39 the number behind the decimal is 3 so we know that 3 is smaller than 5 so 4.39 is smaller than 4.56. Next we see if 4.56 is smaller than 8.79. We know that 4.56 is smaller than 8.79 because 4 is smaller than 8. So from least to greatest this is how it would look, 3.3, 4.39, 4.56, and 8.79. I hope this helped :)