Cambridge Primary Mathematics

To understand different mathematical concepts, students can use Cambridge Primary Mathematics Workbook 5 Answers Chapter 9 Addition and Subtraction of Fractions Exercise 9.1 as a study resource.

Cambridge Primary Mathematics Workbook 5 Chapter 9 Exercise 9.1 Answers

Exercise 9.1 Addition and Subtraction of Fractions

Focus

Question 1.
Use the fraction wall to help you with the calculations.

Question a.
\(\frac{1}{2}+\frac{3}{8}\) =
Answer:
On the fraction wall, 1/2 is the same length as 4/8.
Step 1: Change 1/2 into eighths: 1/2 = 4/8.
Step 2: Add: 4/8 + 3/8 = 7/8.
1/2 + 3/8 = 7/8

Question b.
\(\frac{3}{4}-\frac{1}{8}\) =
Answer:
On the fraction wall, 3/4 is the same length as 6/8.
Step 1: Change 3/4 into eighths: 3/4 = 6/8.
Step 2: Subtract: 6/8 − 1/8 = 5/8.
3/4 − 1/8 = 5/8

Question c.
\(\frac{3}{4}+\frac{2}{8}\) =
Answer:
3/4 = 6/8.
Step 1: Add: 6/8 + 2/8 = 8/8.
Step 2: 8/8 is a whole one.
3/4 + 2/8 = 1

Question 2.
Use the fraction wall to help you with the calculations.