Subtracting Fractions Flashcards

GCSE Mathematics (Edexcel) 1MA1

Subtracting fractions with the same denominator

Keep the denominator the same and subtract the numerators.

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Terms in this set (10)

1

Subtracting fractions with the same denominator

Keep the denominator the same and subtract the numerators.

2

Subtracting fractions with different denominators

Find a common denominator, rewrite the fractions with this denominator, then subtract the numerators.

3

Finding a common denominator

Use the lowest common multiple (LCM) of the denominators as the common denominator.

4

Simplifying the result

After subtracting, simplify the fraction by dividing the numerator and denominator by their highest common factor (HCF).

5

Mixed numbers subtraction

Convert mixed numbers to improper fractions, subtract them, and convert back to a mixed number if needed.

6

Improper fractions subtraction

Subtract the fractions as usual, ensuring the denominators are the same, and simplify if possible.

7

Subtracting a fraction from a whole number

Write the whole number as a fraction with the same denominator as the fraction, then subtract.

8

Negative fractions in subtraction

Follow the rules of subtracting negative numbers: subtracting a negative fraction is the same as adding its positive equivalent.

9

Checking subtraction of fractions

Use the inverse operation (addition) to check if the result is correct.

10

Subtracting fractions in word problems

Carefully interpret the problem, write the fractions, find a common denominator if needed, subtract, and simplify the result.

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