Whole Number and Decimal Place Value Review

Front

What is standard form?

Back

Standard form is a way of writing numbers using digits. For example, the standard form of twelve and fifteen hundredths is 12.15.

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What is expanded form?

Back

Expanded form is a way of writing numbers that shows the value of each digit. For example, the expanded form of 5.39 is (5 x 1) + (3 x 0.1) + (9 x 0.01).

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How do you convert expanded form to standard form?

Back

To convert expanded form to standard form, add the values together. For example, (3 x 10) + (7 x 1) + (9 x 0.1) + (4 x 0.01) + (2 x 0.001) equals 37.942.

Front

What does place value mean?

Back

Place value is the value of a digit based on its position in a number. For example, in the number 2,092.4, the 2 in the thousands place is worth 2,000.

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How much larger is a digit in a higher place value compared to a lower place value?

Back

A digit in a higher place value is 10 times larger than a digit in the next lower place value. For example, the 2 in 2,092.4 is 1,000 times larger than the 2 in the hundredths place.

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What is the product of a number and 1,000?

Back

The product of a number and 1,000 is that number followed by three zeros. For example, 34 x 1,000 = 34,000.

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What is the value of the digit 5 in the number 5.39?

Back

In the number 5.39, the digit 5 is in the ones place, so its value is 5.

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What is the value of the digit 3 in the number 5.39?

Back

In the number 5.39, the digit 3 is in the tenths place, so its value is 0.3.

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What is the value of the digit 9 in the number 5.39?

Back

In the number 5.39, the digit 9 is in the hundredths place, so its value is 0.09.

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How do you write a decimal in words?

Back

To write a decimal in words, say the whole number, then say 'and' for the decimal point, followed by the decimal part. For example, 12.15 is 'twelve and fifteen hundredths'.