Video: Expressing Decimal Numbers in Written Form

Write 3 tens and 5 tenths as a decimal.

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Video Transcript

Write three tens and five tenths as a decimal.

First, we can make a place value chart. Starting all the way on the left and moving to the right, we have hundreds, tens, ones, the decimal then tenths, hundredths, thousandths. We have three tens — so we write a three in the tens place — and five tenths. We add a five to the tenths place.

How do we finish this problem? First, we bring down the decimal place and then we add a zero as a placeholder. Three tens is the same thing as 30.

Three tens and five tenths is equal to 30 and five tenths. We write that 30.5.

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