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Using Word Names for Decimal Numbers

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  • 0:01 Decimal Numbers
  • 0:52 Word Names
  • 2:11 Example
  • 2:34 Special Decimals
  • 3:24 Lesson Summary
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Lesson Transcript
Instructor: Yuanxin (Amy) Yang Alcocer

Amy has a master's degree in secondary education and has taught math at a public charter high school.

In this video lesson, we go in depth into translating our decimal numbers into the English language. Learn how to write out decimal numbers and the special situations that there are.

Decimal Numbers

Just look around when you are shopping and you will see decimal numbers all around you. These are your numbers that have a decimal point in them. At the store, the decimal numbers that you see all have two numbers after the decimal. That is because in our money system, we have coins that represent those decimal values.

One penny represents 0.01 in a decimal number. Ninety-nine pennies represent 0.99 in a decimal number. If you saw 0.54 at the store, how would you read that? You would probably just take one quick look at it and say, 'Oh, that thing costs fifty-four cents.' If we see decimal numbers used to tell us how much things cost, then this is a great way to read those decimal numbers.

Word Names

There is another way to read decimal numbers that works for all kinds of decimal numbers, not just the ones that are used to show us how much things cost. Using this way to read decimal numbers will let you read those decimal numbers that are used in statistics and other scientific fields. Anytime we say or write a number using words, we are using word names for it. Just like we can have several ways of describing the same thing in the English language, we also can have several ways to read a decimal number using word names.

For example, the decimal number 0.54 can be read as fifty-four cents, if this decimal number is used to tell us how much something costs. Or, we can read it as zero point five four. The general way to read decimal numbers is to read the number in front of the decimal point like you normally do, say point for the decimal point, and then read the digits after the decimal point one by one. So, if you happen to see the number 13.567 as you are reading this scientific brochure about how eating too many cheeseburgers affects your performance at school, you would read it as thirteen point five six seven. This particular article just told you that if you ate 13.567 or more cheeseburgers, then your performance at school would suffer because you would be having too many stomachaches.

Example

How would you read the decimal number 104.112? You look at this number and you see that the number in front of the decimal point is one hundred four. So, you go ahead and say that first. Then you say point followed by one one two. So, the word name for 104.112 is one hundred four point one one two. That was pretty easy.

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