Place Value with Decimals
The name of a decimal is determined by the number of places to the right of the decimal point
Mixed decimals are numbers with both whole numbers and decimals
The name of a whole number is determined by the number of places to the left of the decimal point
In the number 128.765, 1 is in the hundreds place, 2 is in the tens place, 8 is in the ones place, 7 is in the tenths place, 6 is in the hundredths place, and 5 is in the thousandths place
To read a decimal correctly, first find the decimal point
Whole numbers are to the left of the decimal point; any numbers to the right of a decimal point form a decimal fraction
Say “and” for the decimal point
The decimal 2164.511 is read as “two thousand, one hundred sixty-four and five hundred eleven thousandths”
Writing extra zeros after the decimal point does not change the value!
The decimals 0.2, 0.20, and 0.200 are equivalent decimals
Here are some practice problems in which I will work through with you to make sure that you understand the main concepts covered.
Write the decimals.
Three hundred thirty-six and sixty-nine hundredths
Write each decimal in words.
In what place (on the place value chart) is the underlined digit? Write the answer.
Write a decimal that has the same number.