Decimal notation is a way of writing numbers that are not whole. It's based on the number 10 and uses a decimal point to separate the whole number part from the fractional part. For example, 3.5 represents three and a half. Each digit after the decimal point represents a fraction with a denominator that is a power of 10. Understanding place value is key to mastering decimals. Remember, the first digit after the decimal is the tenths place, the second is the hundredths place, and so on. Let's practice!
Understanding how to read and write decimals is super important because we use them every day when we measure things like length, weight, or even money! Think about the price of your favorite candy bar – it's usually written with a decimal! So, let's dive in and get comfortable working with decimals!
Match the term with its definition:
| Term | Definition |
|---|---|
| 1. Decimal Point | A. The value of a digit based on its position in a number. |
| 2. Tenths | B. A way of writing numbers that are not whole numbers, based on the number 10. |
| 3. Hundredths | C. The dot used to separate the whole number part from the fractional part. |
| 4. Place Value | D. The first digit to the right of the decimal point represents this place. |
| 5. Decimal Notation | E. The second digit to the right of the decimal point represents this place. |
Decimals are used to represent numbers that are not __________. The __________ point separates the whole number part from the fractional part. The first digit after the decimal represents __________, while the second digit represents __________. Understanding __________ value is crucial for working with decimals.
Explain, in your own words, how decimal notation helps us measure things more precisely than using only whole numbers. Give an example!
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