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Understanding Significant Digits and Scientific Notation in Metric Calculations

This review focuses on significant digits and how to apply them in metric conversions and scientific notation. It covers the identification of significant figures in various measurements, such as 0.500 m and 0.0001002 m, and demonstrates rounding off to three significant digits using examples like 279.3 and 0.0935. The text also includes mathematical operations and conversions, such as converting pounds to grams and deciliters to milliliters, while emphasizing the rules for significant digits and decimal places.

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Understanding Significant Digits and Scientific Notation in Metric Calculations

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Presentation Transcript

  1. Extra Review for Metric Quiz

  2. How many significant digits are in… 0.500 m 500 g 0.0001002 m 1002 kg 3 1 4 4

  3. Round off to 3 sig digs… 279 279.3 0.093459 222.35 19.999 0.0935 222 20.0

  4. Scientific Notation vs. Standard Notation 1.23 x 104 12300 0.00517 6.650 x 102 2.2080 x 10-3 5.17 x 10-3 665.0 0.0022080

  5. Complete these. Pay attention to rules for sig digs and/or decimal places 14.565 + 7.32 = 21.89 143.52-100.6 = 42.9 172.6 x 24.1 = 4160 25.6 x 15.356 = 393

  6. Convert… 5.00 lb to g 2270 g (1 lb = 453.6g) 0.087 dL to mL 8.7mL

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