In this section, we will subtract fractions with like denominators using subtraction statements. When subtracting fractions with like denominators, we subtract the numerators; however, the denominators stay the same. As shown in section on adding fractions with like denominators, we will write our answers in lowest terms by first finding the greatest common factor (GCF) of both the numerator and denominator and then dividing both the numerator and denominator by this GCF.
Method A: Simplify by using greatest common factors
Method B: Simplify by using common factors
Subtracting Fractions With Small Numbers
Subtract. Then, simplify when possible.
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Word Problems: Subtracting Fractions
Marry is swimming 200m of freestyle at a competition. She still has 107 of the race to go. If she swims 102 more of the race, will she be halfway through? Show your work.
Teresa and Maggie buy a bag of chips at the store. Teresa eats 92 of the bag and Maggie eats 95 of the bag. How much of the bag is left?