Solving exercises on pages 159 and 160 of Mathematics 3 textbook

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Ngày cập nhật gần nhất: 15/4/2026

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Solution for exercise 1 on pages 159 and 160 of Mathematics 3 textbook

Solution for exercise 2 on pages 159 and 160 of Mathematics 3 textbook

Solution for exercise 3 on pages 159 and 160 of Mathematics 3 textbook

Solution for exercise 4 on pages 159 and 160 of Mathematics 3 textbook

Let's tackle exercises on pages 159 and 160 of Mathematics 3 textbook. Practice to review subtraction of numbers within 100,000, calculating dates/months, and enhancing problem-solving skills with explanations.

Solution for exercise 1 on pages 159 and 160 of Mathematics 3 textbook

Problem statement:

Mental calculation:

Method: 90000 - 50000 = ?

Mental math: 9 tens of thousands - 5 tens of thousands = 4 tens of thousands

So: 90000 - 50000 = 40000

a) 60000 - 30000 = b) 80000 - 50000 =

100000 - 40000 = 100000 - 70000 =

Answer:

Students mentally calculate and record the results as follows:

a) 60000 - 30000 = 30000 b) 80000 - 50000 = 30000

100000 - 40000 = 60000 00000 - 70000 = 30000

Solution for exercise 2 on pages 159 and 160 of Mathematics 3 textbook

Problem statement:

Set up and calculate:

81981 - 45245 b) 93644 - 26107

86296 - 74951 65900 - 245

Answer:

Solution for exercise 3 on pages 159 and 160 of Mathematics 3 textbook

Problem statement:

A beekeeping farm produced 23560 liters of honey and sold 21800 liters of honey. How many liters of honey does the beekeeping farm have left?

Answer:

The remaining amount of honey is:

23560 - 21800 = 1760 (liters)

Answer: 1760 liters

Solution for exercise 4 on pages 159 and 160 of Mathematics 3 textbook

Problem statement:

Circle the letter preceding the correct answer:

a) The appropriate digit to write in the blank box is

A.8

C.9

D.4

D.6

b) List four months, each with 30 days

Four months, each with 30 days are:

A. February, March, May, and June

B. July, August, September, and October

C. August, September, October, and November

D. April, June, September, and November.

Answer:

a) Circle the letter C

b) Circle the letter D

Following the exercises on page 159 of Mathematics 3 textbook and the subsequent solutions on page 160, the next content will be Solution for exercises on page 160 of Mathematics 3 textbook and Multiplying numbers with five digits by numbers with one digit with the part Solution for exercises on page 161 of Mathematics 3 textbook in the Mathematics 3 curriculum.

In addition to the above content, you can also explore the section Solution for exercises on page 61 of Mathematics 3 textbook to enhance your knowledge of Mathematics 3.

Furthermore, Solution for exercises on page 62 of Mathematics 3 textbook is an important lesson in the Mathematics 3 curriculum that you need to pay special attention to.

Frequently Asked Questions

What types of subtraction exercises are included in Mathematics 3 textbook?

The Mathematics 3 textbook includes various subtraction exercises that involve numbers within 100,000. These exercises focus on mental calculation techniques and help students enhance their problem-solving skills through practical applications.

How can students effectively solve subtraction problems in this textbook?

Students can effectively solve subtraction problems by practicing mental calculations and breaking down the numbers into manageable parts. This approach aids in developing their understanding of subtraction and improves their overall mathematical proficiency.

What is the remaining amount of honey after the sale in the beekeeping farm problem?

The remaining amount of honey at the beekeeping farm, after selling 21,800 liters from an initial 23,560 liters, is calculated as 17,760 liters. This simple subtraction exercise illustrates practical applications of mathematics.

Which months have 30 days according to the exercises in the textbook?

According to the exercises in the Mathematics 3 textbook, the months that have 30 days include April, June, September, and November. This knowledge is important for understanding calendars and time management.

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