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Solve Exercise 4 on Pages 61 and 62 of Math 5 Workbook: Calculate and compare the values of (a + b) x c and a x c + b x c:Guidance for Solving Exercise 4 on Pages 61 and 62 of Math 5 Workbook
Problem:
a) Calculate and then compare the values of (a + b) x c and a x c + b x c:
b) Calculate most conveniently:
9.3 x 6.7 + 9.3 x 3.3
7.8 x 0.35 + 0.35 x 2.2
Solution Method:
- In part a), students just need to substitute the given numbers into the two expressions, calculate carefully to find the most accurate result, note:
+ For the expression (a + b) x c: Perform the calculation inside the parentheses first, and then outside the parentheses.
Answer:
a)
Observing (a + b) x c = a x c + b x c
b) 9.3 x 6.7 + 9.3 x 3.3
= 9.3 x (6.7 + 3.3)
= 9.3 x 10
= 93
+) 7.8 x 0.35 + 0.35 x 2.2
= (7.8 + 2.2) x 0.35
= 10 x 0.35
= 3.5.
Here is the step-by-step guide to solving exercise 4 on pages 61 and 62 of the Math 5 textbook. Additionally, this section includes three more exercises: Solve Exercise 1 on pages 61 and 62 of Math 5 textbook, Solve Exercise 2 on pages 61 and 62 of Math 5 textbook, and Solve Exercise 3 on pages 61 and 62 of Math 5 textbook. Let's explore the solution to exercises on pages 61 and 62 of Math 5 to excel in the subject of 5th-grade Mathematics!
