Grade 7 McGraw Hill Glencoe - Answer Keys Answer keys Chapter 4: Rational Numbers; Lesson 4: Add and Subtract Unlike Fractions

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Grade 7 McGraw Hill Glencoe - Answer Keys

Chapter 4: Rational Numbers; Lesson 4: Add and Subtract Unlike Fractions

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Question 13 (request help)
Pepita and Francisco each spend an equal amount of time on homework. The table shows the fraction of time they spend on each subject. Complete the table by determining the missing fraction for each student.

Pepita

Francisco

Question 14 (request help)
Chelsie saves \(\frac{1}{5}\) of her allowance and spends \(\frac{2}{3}\) of her allowance at the mall. What fraction of her allowance remains? Explain.

Question 15 (request help)
Persevere with Problems Fractions whose numerators are 1, such as \(\frac{1}{2}\) or \(\frac{1}{3}\) , are called unit fractions. Describe a method you can use to add two unit fractions mentally.
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Question 16 (request help)
Use a Counterexample Provide a counterexample to the following statement. The sum of three fractions with odd numerators is never \(\frac{1}{2}\).
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Question 17 (request help)
Which of the following is the prime factorization of the least common denominator of \(\frac{7}{12}+ \frac{11}{18}\) ?
- \(2\times3\)
- \(2\times3^2\)
- \(2^2\times3^2\)
- \(2^3\times3\)