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Category: Education

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Today’s Focus… Adding and Subtracting Decimals …

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Today’s Focus… Adding and Subtracting Decimals …

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The Old Fashion Ice Cream Parlor

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GREAT job singing everyone! Your voices just “melt” me…. Remember to apply the lyrics of the song when adding and subtracting decimals!

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To ADD decimal numbers: STEP 1: Align the decimal points. “Line up the soldiers!” STEP 2: Include the invisible zeros. “Fill in the blanks!” STEP 3: Add each column of digits from right to left. STEP 4 : Place the decimal point in the answer directly below “Put a decimal point – at the bottom of the t-a-n-k!” 123 . + 0 . 179 + 43 . 5 = + 123 . 0 . 179 43 . 5 000 00 166 679 .

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To SUBTRACT decimal numbers: STEP 1: Align the decimal points. “Line up the soldiers!” STEP 2: Include the invisible zeros. “Fill in the blanks!” STEP 3: Subtract each column of digits from right to left. STEP 4 : Place the decimal point in the answer directly below “Put a decimal point – at the bottom of the t-a-n-k!” 27 . 583 – 0 . 2 = - 27 . 583 0 . 2 00 0 27 383 .

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Scenario #1: (decimal addition – 2 items) Nyquan was in the mood for some sweets. He ordered a Royal Banana Split for himself. Then his friend Monet showed up so Nyquan. bought her a Triple Sundae ! How much did Nyquan. pay at the Old Fashioned Ice Cream Shop? Royal Banana Split: \$3.00 Triple Sundae: + \$3.20 Total \$6.20 Royal Banana Split: \$? Triple Sundae: \$? Royal Banana Split: \$3.00 Triple Sundae: \$3.20

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Scenario #2: (decimal addition – multiple items) Tyreese’s karate club won the state championship. To celebrate they went out for ice cream. His team ordered a Big Scoop Sundae (with banana slices) and three strawberry Super Sodas . How much did they spend in all? Big Scoop Sundae: \$? Banana Slices \$? 3 Super Sodas: \$ Big Scoop Sundae: \$3.05 Banana Slices \$0.10 3 Supper Sodas: + \$7.80 Total \$10.95 Big Scoop Sundae: \$3.05 Banana Slices \$0.10 3 Super Sodas: \$2.60 x 3 \$2.60 X 3 \$7.80

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Scenario #3: (decimal subtraction – making change) Leslie’s drawing won first prize in a contest! So her family celebrated by having ice cream! Leslie’s family ordered three Special Sundaes and paid with a \$10 bill . How much change did they receive back? 3 Special Sundaes: \$? Handed cashier: \$10.00 3 Supper Sodas: - \$7.35 Change \$2.65 3 Special Sundaes: \$2.45 x 3 \$2.45 X 3 \$7.35

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Scenario #4: (decimal addition – multiple items – change) Ms. Lott decided to buy ice cream for Mr. B’s entire class– 25 people in all! She bought each person a Royal Banana Split ! How much change did she have left after paying with a \$100 bill ? 25 Royal Banana Splits: \$? Handed cashier: \$100.00 25 Royal Ban. Splits - \$75.00 Change \$25.00 25 Royal Banana Splits: \$3.00 x 25 \$3.00 X 25 1 5 00 6 0 0 7 5. 0 0

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Get Ready!!! Here come the customers!!