(KS2, Year 3)
The LessonFractions can be multiplied. Imagine you wanted to multiply 2/5 (two-fifths) with 1/3 (one-third).
How to Multiply Fractions
QuestionMultiply the fractions below.
Multiply the top numbers (called the numerators) of the fractions together.
2 × 1 = 2
Multiply the bottom numbers (called the denominators) of the fractions together.
5 × 3 = 15
The answer from Step 1 is the numerator of our answer. The answer from Step 2 is the denominator of our answer.
Simplify the fraction if possible. (The fraction in our example is already as simple as possible).
Answer:2/5 (two-fifths) multiplied by 1/3 (one-third) equals 2/15 (two-fifteenths).
2/5 × 1/3 = 2/15
Multiplying Fractions Is EasyMultiply the tops together, multiply the bottoms together. Then simplify (if possible):
Lesson SlidesThe slider below gives a real example of how to multiply fractions. Open the slider in a new tab
A Half of a ThirdWhen you see the word "of" following a fraction, it means multiply or ×. Half of a third means:
It's Easier Than Adding and SubtractingBefore you can add or subtract fractions, you have to make sure the bottom numbers (called the denominators) of both fractions are the same. When you are multiplying fractions, it doesn't matter if the denominators aren't the same. Just multiply the top numbers, multiply the bottom numbers, then simplify.
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