Guide to solve exercise 2 on page 28 Mathematics Grade 5 Workbook
The population of a village increased by 96 people, 82 people, and 71 people over three consecutive years. What is the average increase in population per year for the village?
The total number of people added in the village over 3 consecutive years is: 96 + 82 + 71 = 249 (people). The average annual population increase in the village is: 249 ÷ 3 = 83 (people). Answer: So the village increases by an average of 83 people per year.
Part solution to exercise page 28 Math 5 consists of 5 exercises, after solving exercise 2 page 28 Math 5 textbook, please see further hints and methods Solve Exercise 1 Page 28 Math 4 Textbook, Solve Exercise 3 Page 28 Math 4 Textbook, Solve Exercise 4 Page 28 Math 4 Textbook and Solve Exercise 5 Page 28 Math 4 Textbook, to improve your understanding of 5th-grade mathematics.
The method to solve:
* Observation:
- Known quantities: The population increased by: 96; 82; 71 (people) over 3 consecutive years
- Find the unknown quantity: Average annual population increase.
* Solution approach:
- Step 1: Calculate the total number of people added over 3 consecutive years in the village by adding the 3 known numbers together
- Step 2: Calculate the average annual population increase = the total population just found : 3 (years).
