Prepare for the Certify Teacher Math Exam with multiple choice questions, detailed explanations, and practice quizzes. Boost your confidence and ace your test!

Multiple Choice

What is the sum of the fractions 2/9, 1/4, and 1/6?

To find the sum of the fractions \( \frac{2}{9} \), \( \frac{1}{4} \), and \( \frac{1}{6} \), it's essential to first determine a common denominator for all three fractions. The denominators are 9, 4, and 6. The least common multiple (LCM) of these numbers can be calculated: - The prime factorization of 9 is \( 3^2 \). - The prime factorization of 4 is \( 2^2 \). - The prime factorization of 6 is \( 2^1 \times 3^1 \). The LCM takes the highest power of each prime: - From 9, take \( 3^2 \) - From 4, take \( 2^2 \) - From 6, take \( 2^1 \) and \( 3^1 \) Putting these together, the LCM is \( 2^2 \times 3^2 = 4 \times 9 = 36 \). Now, convert each fraction to have this common denominator of 36: 1. For \( \frac{2}{9} \):

To find the sum of the fractions ( \frac{2}{9} ), ( \frac{1}{4} ), and ( \frac{1}{6} ), it's essential to first determine a common denominator for all three fractions. The denominators are 9, 4, and 6. The least common multiple (LCM) of these numbers can be calculated:

  • The prime factorization of 9 is ( 3^2 ).
  • The prime factorization of 4 is ( 2^2 ).

  • The prime factorization of 6 is ( 2^1 \times 3^1 ).

The LCM takes the highest power of each prime:

  • From 9, take ( 3^2 )

  • From 4, take ( 2^2 )

  • From 6, take ( 2^1 ) and ( 3^1 )

Putting these together, the LCM is ( 2^2 \times 3^2 = 4 \times 9 = 36 ).

Now, convert each fraction to have this common denominator of 36:

  1. For ( \frac{2}{9} ):