Solving Exercise 3 on Pages 69 and 70 of Math Workbook Grade 4

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Ngày cập nhật gần nhất: 15/4/2026

Solution for exercise 3 on pages 69 and 70 of the 4th-grade math workbook: A healthy person's heart beats approximately 75 times per minute. Calculate the total number of heartbeats in 24 hours.

Guidance for solving exercise 3 on pages 69 and 70 of the 4th-grade math workbook

Exercise:
A healthy person's heart beats approximately 75 times per minute. Calculate the total number of heartbeats in 24 hours.

Solution Method:
- Convert hours to minutes
- Calculate the number of heartbeats in one hour by multiplying the number of minutes converted from one hour by the number of heartbeats per minute
- Find the total number of heartbeats in 24 hours by multiplying the number of hours by the number of heartbeats per hour.

Answer:
Conversion: 1 hour = 60 minutes.
In 1 hour, the person's heart beats this many times:
75 x 60 = 4500 (times)
In 24 hours, the person's heart beats this many times:
4500 x 24 = 108000 (times)
Answer: 108000 times.

Mytour has just provided guidance on solving Exercise 3 on pages 69 and 70 of the 4th-grade math workbook. Additionally, there are exercises Solving Exercise 1 on Pages 69, 70 SGK Math Grade 4, Solving Exercise 2 on Pages 69, 70 SGK Math Grade 4, Solving Exercise 4 on Pages 69, 70 SGK Math Grade 4, and Solving Exercise 5 on Pages 69, 70 SGK Math Grade 4. We also suggest solving them using the same method. Let's check out the solutions to exercises on pages 69 and 70 of math grade 4 to excel in 4th-grade math!

Frequently Asked Questions

What is the total number of heartbeats in 24 hours for a healthy person?

A healthy person's heart beats approximately 75 times per minute. Over 24 hours, this totals to 108,000 heartbeats, calculated by multiplying 75 beats per minute by 60 minutes in an hour and then by 24 hours.

How can I calculate the heartbeats per hour based on beats per minute?

To find the heartbeats per hour, multiply the number of heartbeats per minute (75) by the number of minutes in an hour (60). This results in 4,500 heartbeats per hour.

Is there a method provided for solving Exercise 3 in the math workbook?

Yes, the method involves converting hours to minutes, calculating heartbeats in one hour, and then finding the total for 24 hours. This structured approach helps solve similar exercises effectively.

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