Solve exercises on pages 81, 82, 83, 84 of Math 3 Workbook Volume 2, the book Connecting Knowledge with Life

Solve Grade 3 Math exercises on pages 81, 82, 83, 84 of Workbook Volume 2.

Solve exercises on pages 81, 82, 83, 84 of Math 3 Workbook Volume 2, the book Connecting Knowledge with Life:

Practice Reading Clocks, Viewing Calendars

Activity 1

1. Solve Exercise 2 Page 81 Math Grade 3 Workbook

Problem: Choose the correct answer.
On Sunday lunch, the whole family will gather in the kitchen and cook various dishes: rice, mixed vegetables, grilled chicken, and mixed vegetable soup.
a) The rice cooker is plugged in at 10:10. After 40 minutes, the power will automatically turn off, and the rice will be cooked. Which clock below shows the time when the rice is cooked?

b) Mom prepares the mixed vegetable dish in 7 minutes. She starts at 10:50 AM. Which clock below shows the time when Mom finishes preparing the mixed vegetables?

c) The chicken dish is baked using an electric oven. The start and end times are as follows:

Ask how many minutes it took to bake the chicken?
A. 20 minutes                 B. 25 minutes C. 30 minutes                        D. 35 minutes

Guide: Find the time elapsed between two hours and answer the question of the problem.

Answer:
a) The electric rice cooker is plugged in at 10:10 AM. After 40 minutes, the rice will be cooked.
So, the time when the rice is cooked is 10:50 AM. We choose option C.
b) Mom takes 7 minutes to prepare the mixed vegetables. She starts at 10:50 AM. Therefore, Mom finishes preparing the mixed vegetables at 10:57 AM. We choose option B.
c) The chicken dish starts baking at 10:15 AM and finishes at 10:45 AM. So, the chicken is baked for 30 minutes. We choose option C.

2. Solve Exercise 3 Page 82 Math Textbook Grade 3

Problem: On Sunday afternoon, the whole family will do various tasks together:

Ask in what order the family will do those tasks?

Explanation: Observe the task table and arrange the time in order.

Answer:
- The whole family cleans the house together before 3:45 PM.
- After that, they watch soccer from 4:00 PM to 5:45 PM.
- Then, the family will cook rice before 6:30 PM.

3. Solve Exercise 4 Page 82 Math Textbook Grade 3

Problem: In the evening, the whole family plans to go out on a Sunday in the next month (May). Observe the calendar below and tell which days in May the family can choose to go out.

Guidance: Observe the calendar and identify the Sundays in May.

Answer:
The Sundays in May are: 5, 12, 19, 26.
So, in May, the family can go out on: 5, 12, 19, 26.

Activity 2

This June, we will participate in a summer camp for students aged 7 to 10.
Below is the June calendar:

1. Solving Exercise 1 Page 83 Mathematics Grade 3

Exercise: Summer camp is organized from June 24th to June 30th. How many days does the summer camp last?

Solution Guide: Refer to the calendar and answer the problem.

Answer:
From June 24th to June 30th is 7 days.
So, the summer camp lasts for 7 days.

2. Solving Exercise 2 Page 83 Mathematics Grade 3

Exercise: a) The deadline for registration for the summer camp is the first Friday of June. What is the deadline for registration?
b) The list of participants for this event will be announced on the next Monday. Which date is that?

Solution Guide: Refer to the calendar and answer the problems.

Answer:
a) The first Friday of June is June 7th. So, the registration deadline is until June 7th.
b) The list of participants for this event will be announced on the next Monday, which is June 10th.

3. Solving Exercise 3 Page 83 Mathematics Grade 3

Exercise: A day before the summer camp begins.
a) In the morning, Nam prepares the necessary items for the summer camp. The start and end times are as follows:

Ask how long Nam prepared the items?
b) In the afternoon, Nam bakes cookies to give to his friends. The start and end times are as follows:

Ask how long Nam baked cookies?

Solution Guide: Find the time span between two hours and answer the problem.

Answer:
a) In the morning, Nam prepares the items for the summer camp from 9:05 AM to 9:35 AM.
So, Nam takes 30 minutes to prepare for the summer camp.
b) In the afternoon, Nam starts baking cookies from 4:00 PM to 4:55 PM.
So, Nam takes 55 minutes to bake cookies.

4. Solving Exercise 4 Page 84 Mathematics Grade 3

Exercise: On the first day of summer camp, we were given the option to participate in two or three activities (non-overlapping) among the following:

Which activities did you choose, and in what order do they take place?

Solution Guide: Observe the picture and select two or three non-overlapping activities.

Answer:
You can choose one of the following three ways:
Option 1: Participate in activities: Drawing on wood, making rice cakes, and making pottery.
The order of activities: Drawing on wood, making pottery, and making rice cakes.
Option 2: Participate in activities: Ringing the golden bell, making rice cakes, and making pottery.
The order of activities: Ringing the golden bell, making pottery, and making rice cakes.
Option 3: Participate in activities: Making recycled toys, making rice cakes, and making pottery.
The order of activities: Making recycled toys, making pottery, and making rice cakes.

With the exercise solution on pages 81, 82, 83, 84 of Mathematics Grade 3 Workbook 2, the book Connecting Knowledge with Life, I hope students have learned how to solve problems and reinforce the knowledge of the Practical Lesson on reading clocks and calendars.