Solve Exercise 4 Pages 66-67 Math Textbook 4

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Ngày cập nhật gần nhất: 15/4/2026

Solve problem 4 on pages 66-67 of Math textbook 4 about Multiplying a number by a sum, Applying the property of a number with a sum to calculate (following the pattern):

Guidance for solving problem 4 on pages 66-67 of Math textbook 4

Problem statement:
Apply the property of a number with a sum to calculate (following the pattern):

a) Solving 26 x 11, b) Solving 213 x 11, b) 213 x 11 = 213 x (10 +1)

Solving 35 x 101, 123 x 101, 123 x 101 = 123 x (100 + 1), Sample: 36 x 11 = 36 x (10 +1), = 36 x 10 + 36 x 1, = 360 + 36 = 396

Method: Step 1: Analyze 11 into the sum of 10 and 1; similarly, decompose 101 into the sum of 100 and 1, Step 2: Apply the calculation method: a x (b + c) = a x b + a x c

Answer: a) 26 x 11 = 26 x (10 + 1), b) 213 x 11 = 213 x (10 +1), = 26 x 10 + 26 x 1, = 213 x 10 + 213 x 1, = 260 + 26 = 286, = 2130 + 213 = 2343, 35 x 101 = 35 x (100 + 1), 123 x 101 = 123 x (100 + 1), = 35 x 100 + 35 x 1, = 123 x 100 + 123 x 1, = 3500 + 35 = 3535, = 12300 + 123 = 12423

Mytour just provided solutions for exercise 4 on pages 66 and 67 of Math 4 textbook. Additionally, there are exercises such as Solving Exercise 1 on Pages 66 and 67 of Math 4 textbook, Solving Exercise 2 on Pages 66 and 67 of Math 4 textbook, and Solving Exercise 3 on Pages 66 and 67 of Math 4 textbook. We've also suggested solutions along with the methods. Let's take a look at the instructions for solving exercises on pages 66 and 67 of Math 4 to excel in mathematics for Grade 4.

Frequently Asked Questions

What is the method for multiplying a number by a sum in Math textbook 4?

The method involves decomposing the second number into a sum. For example, to solve 26 x 11, we rewrite it as 26 x (10 + 1). This allows us to apply the formula a x (b + c) = a x b + a x c.

How do you apply the property of a number with a sum to calculate 213 x 11?

To calculate 213 x 11, we first express 11 as 10 + 1. Then we use the property: 213 x 11 = 213 x (10 + 1), which simplifies to 2130 + 213, resulting in 2343.

What are the key steps for solving problems involving multiplication in Math textbook 4?

The key steps include: Step 1: Decompose the number into a sum, like breaking down 101 into 100 + 1. Step 2: Use the multiplication property to simplify calculations, applying the formula a x (b + c) = a x b + a x c.

Can you provide an example of solving 35 x 101 using the method described?

Certainly! To solve 35 x 101, we rewrite 101 as 100 + 1. Then, we apply the formula: 35 x 101 = 35 x (100 + 1) = 35 x 100 + 35 x 1, which equals 3500 + 35, resulting in 3535.

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