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Questions and Answers
What is the sum of $ rac{4}{9} + rac{5}{9} $?
What is the sum of $ rac{4}{9} + rac{5}{9} $?
- $ rac{5}{9} $
- $ rac{3}{9} $
- $ rac{9}{9} $ (correct)
- $ rac{1}{2} $
What is the result of $ rac{5}{8} - rac{2}{8} $?
What is the result of $ rac{5}{8} - rac{2}{8} $?
- $ rac{5}{4} $
- $ rac{7}{8} $
- $ rac{1}{4} $
- $ rac{3}{8} $ (correct)
If you have $ rac{1}{4} + rac{3}{8} $, how do you solve it?
If you have $ rac{1}{4} + rac{3}{8} $, how do you solve it?
- Add the numerators and keep $ rac{1}{4} $ as is.
- Do not convert and add directly.
- First subtract the fractions, then convert.
- Convert $ rac{1}{4} $ to $ rac{2}{8} $ and then add. (correct)
Which of the following describes addition of fractions with unequal denominators?
Which of the following describes addition of fractions with unequal denominators?
How do you calculate $ rac{6}{10} - rac{2}{5} $?
How do you calculate $ rac{6}{10} - rac{2}{5} $?
Flashcards
Adding fractions with equal denominators
Adding fractions with equal denominators
Adding two fractions with the same bottom number: add the top numbers, keep the bottom number the same.
Subtracting fractions with equal denominators
Subtracting fractions with equal denominators
Subtracting two fractions with the same bottom number: subtract the top numbers, keep the bottom number the same.
Subtracting Fractions with Different Denominators
Subtracting Fractions with Different Denominators
To subtract fractions with different bottom numbers, you must first find a common denominator. Then, subtract the numerators and keep the common denominator.
Adding or subtracting fractions and whole numbers
Adding or subtracting fractions and whole numbers
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Adding or subtracting mixed numbers
Adding or subtracting mixed numbers
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Study Notes
Adding Fractions
- If denominators are the same, add the numerators and keep the denominator the same
- Example: 3/7 + 2/7 = 5/7
Adding Fractions with Different Denominators
- If denominators are different, first make them the same
- Then add the numerators and keep the denominator the same
Subtracting Fractions
- If denominators are the same, subtract the numerators and keep the denominator the same
- Example: 3/7 - 2/7 = 1/7
Subtracting Fractions with Different Denominators
- If denominators are different, first make them the same
- Then subtract the numerators and keep the denominator the same
Mixed Fractions
- Same rules apply as for normal fractions when adding or subtracting mixed fractions. Consider the examples provided.
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