Equivalent Decimals- decimals that have the same values Place Value- system for writing numbers where the position of digits determines its value Standard Form- the usual way of writing numbers using only digits Expanded Form- way of writing a number as the sum of the values of its digits Decimal- a number that has a digit in the tenths place, hundredths place, and/or beyond. Decimal Point- period seperating the ones and the tenths place in a deciaml number Place Value Chart- chart that shows the value of digits in a number