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DECIMAL OPERATIONS

Review of decimal operations by initiation of word problem. Rules are part of a foldable and video included provides reinforcement of skills.
by

debby Atwood

on 11 August 2014

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Transcript of DECIMAL OPERATIONS

SOLVING OPERATIONS WITH DECIMALS
DECIMAL OPERATIONS
Samantha went shopping at the mall. She bought a skirt for $24.99, three shirts for $8.99 each, and a pair of shoes for $19.99. If she handed the clerk a $100 bill, how much change will she receive back?
ADDING DECIMALS
LINE UP DECIMALS

NEXT, LINE UP NUMBERS

FILL IN THE BLANK SPACES WITH ZEROS
SUBTRACTING DECIMALS
ALL OF THE ADDITION RULES APPLY

ZEROS CAN BE ADDED ONLY AFTER A DECIMAL
MULTIPLYING DECIMALS
LINE UP NUMBERS

IGNORE THE DECIMAL UNTIL YOUR FINAL ANSWER

HOWEVER MANY DIGITS ARE BEHIND A DECIMAL IN THE PROBLEM, MUST BE BEHIND THE DECIMAL IN THE ANSWER!
DIVIDING DECIMALS
ADD DECIMAL BEFORE YOU ADD ZERO

NO DECIMAL AT THE DOOR, DECIMAL GOES UP

DECIMAL AT THE DOOR AND INSIDE, SWOOP!

WHATEVER YOU DO TO THE OUTSIDE, YOU MUST DO TO THE INSIDE!
Samantha went shopping at the mall. She bought a skirt for $24.99, three shirts for $8.99 each, and a pair of shoes for $19.99. If she handed the clerk a $100 bill, how much change will she receive back?
FIRST: 3 X $8.99 =
THEN: ADD THAT TO $24.99 AND $19.99
FINALLY: $100 - THAT TOTAL = THE AMOUNT OF CHANGE
The Decimal Song
Full transcript