Step 2: Multiply the numerator and denominator of each fraction by a number so that they have the LCM as their new denominator Step 3: Add or subtract the
Adding_and_Subtracting_Mixed_Numbers_and_Improper_Fractions.pdf
(Multiply the numerators and the denominators) Of an even number of negative fractions is positive Write the improper fraction as a mixed number
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Assign negative signs to numerators, Multiply Write fraction as a mixed number Example for mixed numbers Adding positive and negative integers
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Multiplication and Division of Fractions page 18 Change these mixed numbers to “top heavy” fractions: What is the total weight of 8½
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*To find the reciprocal of a mixed number, first write the mixed number as an improper fraction, and then “flip” the fraction Example 2: What is the reciprocal
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Multiplying and Dividing Signed Fractions Evaluate 1) ? 1 9 ? 11 6 2) ? 5 3 ? ? 5 4 3) 4 3 ? ? 12 7 4) ? 4 3 ? 3 4
fractMDsigned.pdf
Even though they are given improper or mixed fractions in the calculation, dividing two on the numerator and denominator to simplify it to
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When multiplying a positive and a negative, the answer is negative When adding and subtracting fractions, the denominators of the fractions must be
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To multiply fractions, we multiply the numerators together and the denominators To add integers with the same sign (both positive or both negative),
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To achieve this multiply the denominator and the numerator of each fraction by the opposite denominator This is actually the same as multiplying 1 and so
rules-for-fractions.pdf