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PLACE VALUE Standard form: 804,932,008 *Each group of three digits is called a period and is separated by a comma Word form: eight hundred four million, nine hundred thirty-two thousand, eight *When you get to the comma, say the period * Expanded form: 8 x 100,000,000 + 4x 4,000,000 + 9x 100,000 + 3 x 10,000 + 2 x 1,000 + 8 *Split up the number using place value. For example, an 8 in the hundred millions place equals 8 x 100,000,000. • You can line up the numbers to compare • Example: 76,552 Ο 76,852 76,552 76,852 76,552 < 76,852 5<8 so Examples: 7 17 10 = 0.7 = 0.017 54 100 = 0.54 1,000 Word form 1. Say the decimal as a whole number fifty-five 0.55 Label the place value. In what column does the number end? hundredths Word form is fifty-five hundredths 2. Standard form thousandths 1. What is the place value? Thousandths = 0. __ __ __ Place the numbers to the right 0. 0 2 7 Standard form is 0.027 2. twenty-seven Expanded form Multiply each number by it’s place value. 0.95 0.95 = (9 x 1/10) + (5x 1/100) • You can line up the numbers to compare • Example: 0.592 Ο 0.512 0.592 0.512 0.592 > 0.512 9>1 so