Solving Exercise 2 Page 31 Mathematics 5 Textbook

Guidelines for Solving Exercise 2 Page 31 Mathematics 5 Workbook

Problem:
A rectangular farmland has a length of 80m, and the width is half of the length.
a) Calculate the area of the farmland.
b) Given that 100m² yields 50kg of rice, how many tons of rice can be harvested from the entire farmland?

Solution Method:

- Step 1: Determine the width of the farmland by multiplying the length by 1/2 (since the width is half of the length)

- Step 2: Calculate the area of the farmland using the formula for the area of a rectangle (multiply the length by the width)

- Step 3: Apply the ratio method to find the number of tons of rice harvested from the entire farmland

+ Compare the area, how many times larger than 100 m²

+ Calculate the weight of rice by multiplying the ratio (result obtained above) with the amount of rice harvested per 100 m²

+ Convert the unit from kilograms to tons (based on the mass unit conversion table). 

Answer:
a) The width is:
       80 : 2 = 40 (m)
The area of the farmland is:
       80 x 40 = 3200 (m2)
b) 3200m² compared to 100m² is:
      3200 : 100 = 32 (times)
The amount of rice harvested is:
      50 x 32 = 1600 (kg) or 16 tons
Answer:

a) The area is 3200 square meters.

b) It amounts to 16 tons of rice.

Here is the solution for solving exercise 2 on page 31 of Math Grade 5 textbook. Additionally, this section covers 3 more exercises: Solve Exercise 1 on page 31 of Math Grade 5, Solve Exercise 3 on page 31 of Math Grade 5, and Solve Exercise 4 on page 31 of Math Grade 5. Explore the guide to solving exercises on page 31 Math Grade 5 to excel in the subject.