Common Denominator — Definition & Examples
Read this topicExplanations 3
- What is it? We want to find common denominators of fractions. What we're really trying to do is find the LCM of the denominators. LCM stands for Lowest Common Multiple and is ca…
By Lillian Zhang, Jonathan Heller, Alex Federspiel, Caroline K, Joshua Siktar
- (Video) Common Denominator LCD by Math Antics Here's a good video by mathantics that shows you how to find the common denominator when adding or subtracting fractions. Summary\l…
By Alex Federspiel, Zora Gilbert, Jonathan Heller, Caroline K, Joshua Siktar
- Lowest Common Multiple/Lowest Common Denominator Visualizations The Lowest Common Multiple (LCM) of two numbers is the smallest shared multiple between the two. Let's look at a …
By Jonathan Heller, Liza Sulkin, Alex Federspiel, Caroline K, Joshua Siktar
Problems 24
- What is the least common denominator of the fractions 14\frac{1}{4}41 and 25\frac{2}{5}52?
- What is the least common denominator of 516\frac{5}{16}165 and 914\frac{9}{14}149?
- What is the least common denominator of 13\frac{1}{3}31 and 1112\frac{11}{12}1211?
- What is the least common denominator of 16\frac{1}{6}61 and 19\frac{1}{9}91?
- What is the least common denominator of 16\frac{1}{6}61 and 116\frac{1}{16}161?
- Evaluate the sum of fractions 716+512.\frac{7}{16}+\frac{5}{12}.167+125.
- Find the least common denominator of 12,13,14,15,16,17,18\frac12, \frac13, \frac14, \frac15, \frac16, \frac17, \frac1821,31,41,51,61,71,81.
- What number would you multiply the numerator and denominator of 56\frac{5}{6}65 by to get a least common denominator with the unsimplified fraction 336\frac{3}{36}363?
- Evaluate the difference of fractions using the least common denominator, and put the fraction into the simplest form: 718−59=?\frac{7}{18}-\frac{5}{9}={?}187−95=?
- Simplify completely as a single fraction: 7+10+177+10+\frac{1}{7}7+10+71
- Simplify completely. (16×12)−712\left(\frac{1}{6}\times \frac{1}{2}\right)-\frac{7}{12}(61×21)−127
- What is the least common denominator of 116\frac{1}{16}161 and 115\frac{1}{15}151?
- What is the common denominator between the following fractions? 13,45\frac{1}{3},\frac{4}{5}31,54
- What is the lowest common denominator of 37\frac3773 and 23\frac2332?
- Which of the following is the least common denominator of 314\frac{3}{14}143 and 34\frac{3}{4}43?
- Sam and Logan were hosting a party and made a huge pizza for their guests. They decided to cut this pizza into 484848 slices. One group of their friends ate 112\frac{1}{12}121 …
- What is the difference between the two least common denominators of the following two pairs of fractions? (34,48)(\frac{3}{4}, \frac{4}{8})(43,84) (12,14)(\frac{1}{2}, \frac{1…
- Which of the following are not common denominators of the fractions 14,37,514\frac{1}{4},\frac{3}{7},\frac{5}{14}41,73,145?
- How many common denominators can two random fractions have?
- A cake is cut into 888 pieces. Lily took 222 slices and Bess took a quarter of the cake. How much of the cake is left?
- What is the least common denominator of the following fractions? 45,14,312\frac{4}{5}, \frac{1}{4}, \frac{3}{12}54,41,123
- What is the lowest common denominator between 32\frac3223 and 1132\frac{11}{32}3211?
- Find the lowest common denominator between 23\frac2332 and 1915\frac{19}{15}1519.
- What is the least common denominator between 94\frac9449 and 314\frac{3}{14}143?