Place Value and Powers of Ten

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What is place value?

Back

Place value is the value of a digit based on its position in a number. For example, in the number 345, the 3 is in the hundreds place, so its value is 300.

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CCSS.4.NBT.A.1

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What does the term 'powers of ten' mean?

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Powers of ten refer to the number 10 raised to an exponent. For example, 10^2 means 10 multiplied by itself, which equals 100.

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CCSS.5.NBT.A.2

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What is the value of the digit 5 in the number 0.555?

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The value of the 5 in the middle is 0.05, while the value of the 5 on the right is 0.005.

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CCSS.5.NBT.A.3A

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How do you convert a number in scientific notation to standard form?

Back

To convert a number in scientific notation to standard form, multiply the number by 10 raised to the power indicated. For example, 6.21 x 10^2 = 621.

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Back

621

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CCSS.5.NBT.A.2

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Back

No, the equation is not true. The decimal point moved too many places to the right.

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CCSS.5.NBT.A.2

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Back

6.21

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CCSS.8.EE.A.3

Front

What happens to a decimal point when you multiply by 10?

Back

When you multiply a number by 10, the decimal point moves one place to the right.

Tags

CCSS.5.NBT.A.2

Front

What happens to a decimal point when you divide by 10?

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When you divide a number by 10, the decimal point moves one place to the left.

Tags

CCSS.5.NBT.A.2

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What is the value of the digit 4 in the number 4,250?

Back

The value of the digit 4 is 4,000 because it is in the thousands place.

Tags

CCSS.4.NBT.A.1