Common Denominators and the Least Common Denominator Worksheet with Answer Key

What's on the worksheet

1. Rename both fractions using the denominator given, filling in each box:
2. Rename Monday's and Tuesday's snowfall to a common denominator, changing only one fraction.
3. Find the least common denominator by listing multiples, then rename both fractions:
   \dfrac{2}{3} and \dfrac{1}{4}\dfrac{1}{2} and \dfrac{4}{5}\dfrac{3}{4} and \dfrac{1}{6}\dfrac{5}{6} and \dfrac{1}{4}
4. Samir's three skating lessons: find the least common denominator and rename the lesson times.
5. Grace renames to fourths and Jack to twelfths: are both right, and which is the least?
6. Naomi's renamed fractions are 8 twelfths and 9 twelfths: find the two original fractions.