# 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.

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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 5 < 8 so  76,552 < 76,852

 Examples:  7 = 0.7 54 = 0.54 17 = 0.017  10 100 1,000

 Word form 0.55  1. Say the decimal as a whole number  fifty-five 2. Label the place value. In what column does the number end?  hundredths  Word form is fifty-five hundredths

 Standard form twenty-seven thousandths  1. What is the place value?  Thousandths = 0. __ __ __ 2. Place the numbers to the right  0. 0 2 7  Standard form is 0.027

 Expanded form0.95  Multiply each number by it’s place value.  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 9 > 1 so  0.592 > 0.512

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