"Master Adding Rational Numbers with Different Denominators: Test Your Skills No...

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Questions and Answers

Which of the following is the first step in adding rational numbers with different denominators?

  • Subtract the two rational numbers directly
  • Find the equivalent rational numbers of the given rational numbers with the LCM as the numerator (correct)
  • Add the two rational numbers directly
  • Multiply the two rational numbers

What is the purpose of finding the LCM of the two denominators when adding rational numbers?

  • To multiply the two denominators
  • To find the difference between the two denominators
  • To convert the denominators to the same value (correct)
  • To find the sum of the two denominators

When adding rational numbers with different denominators, what do we do after finding the equivalent rational numbers?

  • Divide the two rational numbers
  • Add the two rational numbers (correct)
  • Subtract the two rational numbers
  • Multiply the two rational numbers

What is the LCM of 6 and 8, and what is the sum of the resulting equivalent rational numbers 3/6 and 2/8?

<p>9/12 and 5/12 (A)</p>
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What is the LCM of 9 and 15, and what is the resulting equivalent rational number of 2/9?

<p>45 and 5/45 (D)</p>
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What is the LCM of 12 and 20, and what is the resulting equivalent rational number of 5/20?

<p>60 and 15/60 (C)</p>
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