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Significant Digits (Figures). Significant digits represent _____________________________________ Any digit that is actually measured or estimated will be considered significant. E.g. The length of something is between 5.2 and 5.3 cm. Suppose we estimate it to be 5.23 cm. .
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Significant Digits (Figures) • Significant digits represent _____________________________________Any digit that is actually measured or estimated will be considered significant. • E.g. The length of something is between 5.2 and 5.3 cm. Suppose we estimate it to be 5.23 cm.
Significant Digits • The first 2 digits (5 and 2) are certain but the last digit (0.03) was estimated. Therefore, __________________.
Significant Digits Rules • __________________ e.g. 123 m=3 s.d., 23.56=4 s.d.
Significant Digits Rules 2) __________________ e.g. 1207 m = 4 s.d., 120.5 km/h = 4 s.d.
Significant Digits Rules 3) __________________ e.g. 12.50 m/s = 4 s.d. because it shows that we actually measured that digit to be 0. 60.00 km = 4 s.d.
Significant Digits Rules 4) Zeros used to indicate the position of the decimal are not significant. e.g. __________________.
Significant Digits Rules 5) All counting numbers have an infinite number of significant digits because we are certain of the exact number e.g. __________________