Solving Exercise 2 Page 29 Mathematics Grade 4

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Ngày cập nhật gần nhất: 15/4/2026

Solving problem 2 on page 29 of the Math 4 textbook, within the Chart section, in the year 2002, how many tons of rice did Uncle Ha's family harvest?

Guidelines for solving Exercise 2 on page 29 of Math 4 textbook

Solution Method:
* Problem Analysis
- The problem states:
+ The amount of rice Uncle Ha's family harvested in 3 years: 2000, 2001, 2002 is represented through a chart.
+ Each drawing of a rice bag on the chart symbolizes a value of 10 tons of rice.
- The problem requires: Based on the images on the chart, answer the questions.
* Solution Approach:
- Calculating the amount of rice harvested in each year: Simply multiply the corresponding number of drawings by 10 tons. For the exercise requiring the determination of the number of tons of rice, convert the unit of the result from tons to metric tons (based on the learned unit conversion for mass).
- Comparing which year harvested more/less:
+ Calculate the amount of rice Uncle Ha's family harvested in each year.
+ Convert to the same unit of mass.
+ Compare the obtained results as comparing two natural numbers, then draw a conclusion.

Answer:

a) In 2002, Uncle Ha's family harvested 5 x 10 tons = 50 tons = 5 metric tons (of rice) => Uncle Ha's family harvested 5 metric tons of rice in 2002.

b) In 2000, Uncle Ha's family harvested 4 x 10 tons = 40 tons = 4 metric tons (of rice). Therefore, in 2002, Uncle Ha's family harvested more than in 2000: 5 - 4 = 1 metric ton (of rice) => In 2002, Uncle Ha's family harvested 1 metric ton more than in 2000.

c) In 2001, Uncle Ha's family harvested 3 x 10 tons = 30 tons = 3 metric tons (of rice).

Over the three years, Uncle Ha's family harvested a total of 4 + 3 + 5 = 12 metric tons (of rice).

The year 2002 witnessed the highest rice harvest for Uncle Ha's family.

The year 2001 recorded the lowest rice harvest for Uncle Ha's family.

In the solution to exercise page 29 math 4, there are 2 exercises represented in the chart. Moving on to the solution for exercise 2 page 29 Math 4 textbook. Mytour provides suggested answers and detailed solving methods for Solving Exercise 1 Page 29 Math 4 Textbook. Students should grasp the knowledge presented in this lesson.

Frequently Asked Questions

How many tons of rice did Uncle Ha's family harvest in 2002?

In 2002, Uncle Ha's family harvested 50 tons of rice, which is equivalent to 5 metric tons, according to the chart provided in the Math 4 textbook.

What method is used to solve the rice harvest problem in Math 4?

The solution method involves analyzing the chart, calculating the number of rice bags, multiplying by 10 tons per bag, and converting the results to metric tons for comparison.

How does the rice harvest in 2002 compare to previous years?

In 2002, Uncle Ha's family harvested 1 metric ton more rice than in 2000, with totals of 5 metric tons in 2002 compared to 4 metric tons in 2000 and 3 metric tons in 2001.

What was the total rice harvest for Uncle Ha's family over three years?

Uncle Ha's family harvested a total of 12 metric tons of rice over three years: 4 metric tons in 2000, 3 metric tons in 2001, and 5 metric tons in 2002.

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