Add and Subtract Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Tags

CCSS.5.NBT.B.7

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Tags

CCSS.5.NBT.B.7

Front

What is the sum of 4.62 cm and 7.7 cm?

Back

The sum is 12.32 cm.

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CCSS.6.NS.B.3

Front

What is 6.7 - 2.33?

Back

The result is 4.37.

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CCSS.5.NBT.B.7

Front

What is 91.55 + 7.6?

Back

The sum is 99.15.

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CCSS.6.NS.B.3

Front

What is 5.66 + 4.25?

Back

The sum is 9.91.

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CCSS.6.NS.B.3

Front

If Jenna buys gummy bears for $2.74 and pays with $10, how much change does she get back?

Back

She gets back $7.26.

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CCSS.6.NS.B.3

Front

What is the importance of aligning decimal points when adding or subtracting?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.

Tags

CCSS.5.NBT.B.7

Front

What is the difference between a decimal and a whole number?

Back

A decimal represents a part of a whole, while a whole number is a complete unit without fractions or decimals.

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CCSS.5.NBT.A.2