standard form - the usual or common way to write a number using digits, expanded form - a way of writing a number as the sum of the values of its digits, period - each group of three digits on a place value chart, decimals - numbers that have digits in the tenths place, hundredths place, thousandths place, and beyond, decimal point - used to separate the ones place from the tenths place, equivalent decimals - decimals that have the same value, place-value chart - a chart that shows the value of the digits in a number,

Chapter 1: Place Value

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