Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 8 Lesson 7 Adding and Subtracting Mixed Numbers to secure good marks & knowledge in the exams.
McGraw-Hill Math Grade 4 Answer Key Chapter 8 Lesson 7 Adding and Subtracting Mixed Numbers
Add or Subtract
Add or subtract. Write your answers in simplest form.
Question 1.
Answer:
The Denominators of the given fractions are same so add the numerators.
\(\frac{3}{8}\) + \(\frac{2}{8}\) = \(\frac{5}{8}\)
1 + 2 + \(\frac{5}{8}\) = 3\(\frac{5}{8}\)
Question 2.
Answer:
The Denominators of the given fractions are same so subtract the numerators.
\(\frac{4}{5}\) – \(\frac{3}{5}\) = \(\frac{1}{5}\)
17 – 9 = 8
8 + \(\frac{1}{5}\) = 8\(\frac{1}{5}\)
Question 3.
Answer:
The Denominators of the given fractions are same so add the numerators.
\(\frac{4}{7}\) + \(\frac{2}{7}\) = \(\frac{6}{7}\)
27 + 32 = 59
59 + \(\frac{6}{7}\) = 59\(\frac{6}{7}\)
Question 4.
Answer:
The Denominators of the given fractions are same so subtract the numerators.
\(\frac{2}{2}\) – \(\frac{1}{2}\) = \(\frac{1}{2}\)
80 – 35 = 45
45 + \(\frac{1}{2}\) = 45\(\frac{1}{2}\)
Question 5.
The length of a baby Gila monster is 5\(\frac{7}{8}\) inches. The length of an adult is 21\(\frac{1}{8}\) inches. How much longer is the adult than the baby?
Answer:
The length of a baby Gila monster is 5\(\frac{7}{8}\) inches.
The length of an adult is 21\(\frac{1}{8}\) inches
21\(\frac{1}{8}\) – 5\(\frac{7}{8}\)
21 – 5 = 16
15\(\frac{9}{8}\) – \(\frac{7}{8}\)
15\(\frac{2}{8}\) or 15\(\frac{1}{4}\) inches