Grade 6 Mathematics · Strand 1: Numbers · Fractions
Adding Fractions Using LCM
A short Grade 6 Mathematics lesson for the CBE curriculum, part of Numbers: Fractions. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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1. Why can we NOT add \frac{1}{2} + \frac{1}{3} by writing \frac{2}{5}?
- A. Halves and thirds are different slice sizes, so they must first be changed to the same denominator
- B. The answer should be \frac{1}{5}
- C. Fractions can never be added
- D. The numerators must be multiplied, not added
2. What is the Lowest Common Multiple (LCM) of 4 and 6?
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3. Work out \frac{1}{3} + \frac{1}{4}. Give the answer in simplest form.
- A. \frac{2}{7}
- B. \frac{7}{12}
- C. \frac{1}{7}
- D. \frac{5}{12}
4. A farmer fills \frac{2}{5} of a tank in the morning and \frac{1}{10} in the afternoon. What fraction of the tank is filled altogether, in simplest form?
- A. \frac{3}{15}
- B. \frac{3}{10}
- C. \frac{1}{2}
- D. \frac{2}{5}
5. What is the name for the total result obtained when two or more amounts are added together?
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