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1)  Why do you round decimals?

Rounding makes a number simpler but keeps it close to it's original value.

2)  Explain the process of rounding decimals.

Rounding numbers results in an estimated or approximate value.

To round numbers:
You can simplify decimals by rounding off. To round off a decimal number, you limit the number of decimal places that the number holds.

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rounding clipart:  https://www.youtube.com/watch?v=i4tl3ahFz6Y
https://ecdn.teacherspayteachers.com/thumbitem/Rounding-Decimals-to-the-Nearest-Tenths-Interactive-PPT-Game-3391854-1506477439/original-3391854-4.jpg
http://www.dummies.com/education/math/algebra/how-to-round-off-decimals-and-fractions/

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1)  Why do you multiply decimals?

You multiply decimals to determine the total of the two  numbers multiplied.

2)  Explain the process of multiplying decimals.

First. you multiply the numbers and ignore the decimal points. Then, you count how many number of digits that come after the decimal points in the two numbers you multiplied. You place the decimal point in the product so that the same number of digits comes after the decimal point in your answer.

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1)  Why do you compare and Order Decimals?

You compare and order decimals the same way you do other numbers, by comparing different place values from left to right.

2)  Explain the process of comparing and ordering decimals.

You write down the numbers into place value tables on top of each other. The compare the different place values in the two numbers from left to right, starting at the largest place value.

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1)  Why do you divide decimals?

To break them down into equal parts.

2)  Explain the process of dividing decimals.

FIrst, if the divisor is not a whole number you move the decimal point to the right to make it a whole number and move the decimal point the same number of places.
Then, divide as usual.
You then put a decimal point directly above the decimal point in the dividend.

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1)  Why do you add or subtract decimals?

You add decimals to get a total of the of the two numbers.

You subtract decimals to find the difference in the two numbers.

2)  Explain the process of adding and subtracting decimals.
To add decimals you first have to line up the place values. Then you add up the numbers that are lined up in the same place values. If the numbers don't have the same number of digits you can add zeros to line them up. You then drop down the decimal into you answer into the same placement in your answer.

You subtract decimals by lining up the number with the decimals points located in the same place and using zeros to fill in just like you add them. Then you subtract the numbers and move your decimal point down to your answer.

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1)  Why do you convert decimals to fractions?

You convert decimals to fractions to view the numbers differently. Because they are both numbers that are not whole.

2)  Explain the process of converting decimals to fractions.

First, write the decimal number divided by one.
Then you multiply both the top and bottom number by 10 for every number after the decimal point. Finally,you reduce or simplify the fraction.