Adding/Subtracting Decimals

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2.45

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CCSS.5.NBT.B.7

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555.794

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CCSS.6.NS.B.3

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7.98

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CCSS.6.NS.B.3

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If Allison worked 7.45 hours on Monday and 5.21 hours on Friday, how many total hours did she work?

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12.66 hours

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CCSS.6.NS.B.3

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Xavier spent $15.68 on a shirt, $29.67 on shoes, and $14.95 on pants. How much did he spend in total?

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$60.30

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CCSS.6.NS.B.3

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Define decimals.

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Decimals are numbers that represent a fraction of ten, using a decimal point to separate the whole number from the fractional part.

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CCSS.8.NS.A.2

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What is the place value of the digit 5 in the number 3.45?

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The place value of 5 in 3.45 is 'tenths'.

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CCSS.5.NBT.A.3A

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How do you align decimals when adding or subtracting?

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Align the numbers by their decimal points, ensuring that the digits in each place value are stacked vertically.

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CCSS.5.NBT.B.7

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What is the first step in adding decimals?

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Align the decimal points and add the numbers as you would with whole numbers.

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CCSS.5.NBT.B.7

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What do you do if the numbers have different lengths when adding or subtracting decimals?

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Add zeros to the end of the shorter number to make them the same length.

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CCSS.5.NBT.B.7