152x Filetype PPT File size 0.24 MB Source: tazewellmath.pbworks.com
Terminology Terminology Like decimals, fractions represent parts of numbers. A fraction is usually a number that is between 0 and 1. Numerator - number on top Denominator - number on bottom To add or subtract fractions To add or subtract fractions with like denominators: with like denominators: • If the denominators are already the same, then you’re ready to add or subtract. • Add or subtract the numerators. Keep the denominators the same. • Simplify (reduce) the fraction, if possible. • If you end up with an improper fraction, change it to a mixed number. Examples Examples 1 2 3 + = 5 5 5 This answer cannot be reduced any further. 9 5 = 4 ÷ 2= 2 14 14 14 7 The GCF of 4 and 14 is 2, so we divide by 2 to reduce. 8 + 3 11 9 9 = 9 This is an improper fraction (the top is bigger than the bottom), so we want to change it to a mixed number. To do this, divide the bottom into the top. 1 Answer: 2 911 19 9 2
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