Go through the Math in Focus Grade 5 Workbook Answer Key Chapter 3 Practice 1 Adding Unlike Fractions to finish your assignments.
Math in Focus Grade 5 Chapter 3 Practice 1 Answer Key Adding Unlike Fractions
Find two equivalent fractions for each fraction.
Example
Question 1.
\(\frac{3}{4}\) = ___ = ____
Answer:
Question 2.
\(\frac{2}{5}\) = ___ = ____
Answer:
Question 3.
\(\frac{5}{6}\) = ___ = ____
Answer:
Question 4.
\(\frac{1}{7}\) = ___ = ____
Answer:
Express each fraction in simplest form.
Question 5.
\(\frac{6}{8}\) = ___
Answer:
Question 6.
\(\frac{8}{20}\) = ___
Answer:
Question 7.
\(\frac{10}{15}\) = ___
Answer:
Question 8.
\(\frac{9}{21}\) = ___
Answer:
Rewrite each pair of unlike fractions as like fractions.
Example
Question 9.
\(\frac{1}{4}\) = ___ \(\frac{5}{12}\) = ___
Answer:
Question 10.
\(\frac{1}{10}\) = ___ \(\frac{2}{5}\) = ___
Answer:
Question 11.
\(\frac{5}{9}\) = ___ \(\frac{2}{3}\) = ___
Answer:
Question 12.
\(\frac{3}{8}\) = ___ \(\frac{9}{16}\) = ___
Answer:
Write equivalent fractions for each fraction. Then find the least common denominator of the fractions.
Example
\(\frac{1}{2}\) = \(\frac{2}{4}\) = \(\frac{3}{6}\)
\(\frac{2}{3}\) = \(\frac{4}{6}\)
The least common denominator is 6.
Question 13.
\(\frac{2}{3}\) =
\(\frac{3}{4}\) =
The least common denominator is ____
Answer:
Question 14.
\(\frac{1}{4}\) =
\(\frac{5}{6}\) =
The least common denominator is ____
Answer:
Question 15.
\(\frac{5}{6}\) = ____
\(\frac{3}{8}\) = ____
The least common denominator is ____
Answer:
Shade and label each model to show the tractions. Then complete the addition sentence.
Example
Question 16.
\(\frac{1}{5}\), \(\frac{1}{2}\)
Answer:
Look at the model. Write two addition sentences.
Question 17.
\(\frac{1}{6}\), \(\frac{1}{4}\)
\(\frac{1}{6}\) + \(\frac{1}{4}\) = ___ + ___
= ____
Answer:
Question 18.
\(\frac{1}{5}\), \(\frac{2}{3}\)
\(\frac{1}{5}\) + \(\frac{2}{3}\) = ____ + ___
= ____
Answer:
Question 19.
Addition sentence 1:
Answer:
Question 20.
Addition sentence 2 (fractions in simplest form):
____ + ____ = ____
Answer:
Add. Express each sum in simplest form.
Question 21.
\(\frac{1}{3}\) + \(\frac{1}{9}\) =
Answer:
Question 22.
\(\frac{5}{8}\) + \(\frac{2}{4}\) =
Question 23.
\(\frac{1}{2}\) + \(\frac{6}{7}\) =
Answer:
Question 24.
\(\frac{4}{8}\) + \(\frac{1}{5}\) =
Answer:
Use benchmarks to estimate each sum.
Example
Question 25.
\(\frac{2}{3}\) + \(\frac{2}{9}\)
Answer:
Question 26.
\(\frac{7}{9}\) + \(\frac{1}{7}\) + \(\frac{3}{5}\)
Answer: