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# 6.3 Decimals

### Unit Review

TermDefinition
Decimal A number with a decimal point, represented by the period. *Note: whole numbers have an implied decimal after the number ex. 4 = 4.
Place Value The value of where the digit is in the number.
Add Decimals -Line up the decimals vertically (up and down)- tf there is no decimal, it is assumed to be at the end. Ex. 6 = 6. -Fill in any blank spots with 0's -Add (remember to regroup if needed) -Bring down the decimal
Adding decimals example word problems 1. Buying multiple items and finding the total cost 2. Finding the perimeter of an object
Subtract decimals -Line up the decimals vertically (up and down)- tf there is no decimal, it is assumed to be at the end. Ex. 6 = 6. -Fill in any blank spots with 0's -Subtract (remember to regroup if needed) -Bring down the decimal
Difference Answer to a subtraction problem
Subtracting decimal example word problems 1. Find the DIFFERENCE 2. How much change would you get or how much is left? 3. Finding the part when given the total and one part.
Multiply decimals -DO NOT Line up the decimals. Line the numbers up on the right. -Multiply. -Count the number of decimal places in both numbers in the original problem. This is the number of places in your answer.
Multiplying decimals word problem examples 1. Buying/using more than one of an item
Product Answer to a multiplication problem
divide decimals -Write in standard form (top in box) -Bring Decimal Up on answer line -Divide (Does McDonalds Sell Cheeseburgers) - Annex 0's if there is a remainder
Quotient Answer to a division problem
Dividing decimal word problem examples 1. Splitting or sharing equally 2. Finding the part when given the total and one part
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