Understanding Decimals October 5, 2009. Reading and Writing Decimals Standard form: 1.00797 Word Form: one and seven hundred ninety- seven hundred-thousandths.

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Presentation transcript:

Understanding Decimals October 5, 2009

Reading and Writing Decimals Standard form: Word Form: one and seven hundred ninety- seven hundred-thousandths. Short-Word Form: 1 and 797 hundred thousandths Expanded Form: (1x1)+(7x 0.001)+ (9 x )+ (7 x )

Practice Pg. 18 in WB odd problems

Comparing and Ordering Decimals Begin with the whole numbers. Then order the tenths. Then order the hundredths. 5.36; 4.98; 5.52; 5.5 least to greatest

Practice Pg. 19 in WB odd problems

Rounding Decimals Same as rounding whole numbers. Ex. Round to the nearest hundredth what number is in that place value. What number is to the right? Does it round up or stay the same?

Practice Round to underline place value

Homework Pg.20 in WB