1. Which of the following is a common denominator of 3/4 and 5/6?

A6


B8


C10


D12




  1. Which of the following is NOT a common denominator of 2/5 and 3/10?

A5


B10


C20


D30




  1. Which of the following correctly renames 2/3 and 1/2 using a common denominator?

A2/6 and 1/6


B3/6 and 2/6


C4/6 and 3/6


D4/6 and 6/12


  1. Which correctly renames 7/8 and 5/6 using a common denominator?

A14/16 and 15/18


B28/24 and 20/24


C42/48 and 40/48


D42/48 and 30/48


  1. Which of the following is a common denominator of 3/4 and 1/5?

A20


B15


C30


D35