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Understanding Decimals

Understanding Decimals. October 5, 2009. Reading and Writing Decimals. Standard form: 1.00797 Word Form: one and seven hundred ninety- seven hundred-thousandths. Short-Word Form: 1 and 797 hundred thousandths Expanded Form:

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Understanding Decimals

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  1. Understanding Decimals October 5, 2009

  2. Reading and Writing Decimals Standard form: 1.00797 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 0.0001)+ (7 x 0.00001)

  3. Practice • Pg. 18 in WB odd problems

  4. 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

  5. Practice • Pg. 19 in WB odd problems

  6. Rounding Decimals • Same as rounding whole numbers. Ex. Round 0.105 to the nearest hundredth. 0.105- what number is in that place value. What number is to the right? Does it round up or stay the same?

  7. Practice Round to underline place value. • 12.5987 • 0.00256 • 1.5273 • 56.098 • 11.99

  8. Homework • Pg.20 in WB

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