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Published byRegina Pope Modified over 9 years ago
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Scientific Math
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Accuracy v. Precision Accuracy-closeness of measurements to the correct value Accuracy-closeness of measurements to the correct value Precision-closeness of a set of measurements Precision-closeness of a set of measurements
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Scientific Notation Numbers are written in the form M x 10 n Numbers are written in the form M x 10 n M is between 1 and 10 M is between 1 and 10 N is a whole number N is a whole number
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Adding/Subtracting Scientific Notation Must have same exponent Must have same exponent Add or subtract M factors Add or subtract M factors Exponent may remain the same or have to be adjusted Exponent may remain the same or have to be adjusted
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Multiply M factors are multiplied M factors are multiplied Exponents are added Exponents are added
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Division M factors are divided M factors are divided Exponent of denominator is subtracted from numerator Exponent of denominator is subtracted from numerator
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Direct Proportions Two quantities are directly proportional if dividing one by the other gives a constant value Two quantities are directly proportional if dividing one by the other gives a constant value
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Inverse Proportion Two quantities are inversely proportional when their product is constant Two quantities are inversely proportional when their product is constant
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Significant Figures Non Zeroes are significant Non Zeroes are significant
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Zero Rules Leading Zeroes do not count Leading Zeroes do not count –0.0025 has two significant numbers
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Zero Rules Captive Zeros count as significant Captive Zeros count as significant –1.008 has four significant numbers
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Zero Rules Trailing zeros only if the number has a decimal Trailing zeros only if the number has a decimal –100 has one significant number –1.00 x 10 3 has 3 significant numbers
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