Compose and decompose seven-digit numbers and decimals through thousandths in word, standard, and expanded forms.
Statement of Lesson Purpose:
TSW make a place –value chart and model to understand decimals through thousandths.
The word "Decimal" really means "based on 10" (From Latin decima: a tenth part).
We sometimes say "decimal" when we mean anything to do with our numbering system, but a "Decimal Number" usually means there is a Decimal Point.
TTW write the vocabulary word: thousandths, compose, decompose, decimals, hundredth, and tenth, students can define the words, using their own words, and give an example of each in a graphic organizer. TTW have students complete a vocabulary chart for the vocabulary words for the week along with the definition. Decimal a number with one or more digits to the right of the decimal, tenth – one of ten equal parts, hundredth – one of one hundred equal parts, hundredths – one of one thousandths equal parts, equivalent decimals – decimals that name the same number or amount.
Read the following decimal number names and write the corresponding decimal number. Example:
Twenty-three and thirteen hundredths (23.13)
Twenty-three and thirteen thousandths (23.013)