What is a decimal

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Information about What is a decimal
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Published on May 23, 2008

Author: afabbro

Source: authorstream.com

What is a Decimal? : What is a Decimal? What is a decimal? : What is a decimal? A decimal is similar to a fraction in that it is not a whole number. It is a part of a number. We use decimals most often when we are talking about money. $13.45 How would you read this number? $13.45 : $13.45 Thirteen dollars and forty five cents. Remember: You do not need to use the ¢ when your money amount is greater than $1. What does the .45 mean? : What does the .45 mean? .45 is the same thing as saying 45¢ . It means that it is only a part of a dollar. It is not the whole dollar. We still need more to get the whole thing. Why do I have to understand decimals? : Why do I have to understand decimals? This is a good question. We need to understand what the value of each number means in order to understand what we are talking about. Here is an example: A shirt costs $12.05, but when I wrote the number down I wrote $12.5. What is wrong with this? Why is $12.5 wrong? : Why is $12.5 wrong? $12.5 really is saying $12.50, because when we read how much something costs it always has two places after the decimal point. If we don’t have a number after the first number we must assume it is a zero. However, when we read $12.05, the zero is the place holder so we know it is 5¢ and not 50¢. That is a 45¢ difference. I can get a piece of gum for that amount! Let’s Look at Some Place Value : Let’s Look at Some Place Value How do I read a decimal? : How do I read a decimal? If you look at the number 12.3, you say 12 and 3 tenths. If you look at the number and it says 12.35, you say 12 and 35 hundredths. If you look at a number and it says 12.05, you say 12 and 5 hundredths. Now you practice saying them!

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