Solving Exercise 2 on Page 71 of Math 4 Textbook

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Ngày cập nhật gần nhất: 1/5/2026

Solving Exercise 2 on Page 71 of Math 5 Textbook in the Introduction to Mental Calculation of Two-Digit Numbers with 11. Find x:

Guide to Solving Exercise 2 on Page 71 of Math 5 Textbook

Problem:
Find x:
a) x ÷ 11 = 25; b) x ÷ 11 = 78

Solution Method:
- For parts a and b: To find the divisor, multiply the quotient by the divisor
- Method for mental multiplication of two-digit numbers by 11: Refer to the instructions in solving Exercise 1 on page 69 of Math 4 Textbook.

Answer:
a) x ÷ 11 = 25 b) x ÷ 11 = 78
x = 25 x 11 x = 78 x 11
x = 275 x = 858

Section solving exercises page 71 Math 5 consists of 4 exercises, after solving Exercise 2 on page 71 of Math 5 Textbook, students are invited to continue with hints and methods for Solving Exercise 1 on Page 71 of Math 4 Textbook, Solving Exercise 3 on Page 71 of Math 4 Textbook, and Solving Exercise 4 on Page 71 of Math 4 Textbook, to improve their understanding of Grade 5 Mathematics!

Frequently Asked Questions

What is the solution method for finding x in Exercise 2 of the Math 5 Textbook?

To solve for x in Exercise 2, you multiply the quotient by the divisor, which is 11. For part a, x ÷ 11 = 25, so x = 25 x 11 = 275. For part b, x ÷ 11 = 78, resulting in x = 78 x 11 = 858.

How can I improve my mental calculation of two-digit numbers with 11?

Improving mental calculation with two-digit numbers involves practice and familiarity with the multiplication method. Refer to the instructions in Exercise 1 on page 69 of the Math 4 Textbook for effective strategies and techniques.

Are there additional exercises to practice after Exercise 2 in the Math 5 Textbook?

Yes, after completing Exercise 2, students should continue with Exercises 1, 3, and 4 on page 71 of the Math 4 Textbook. These exercises reinforce the concepts learned and enhance understanding of Grade 5 Mathematics.

What is the importance of solving Exercise 2 on page 71 of the Math 5 Textbook?

Solving Exercise 2 is crucial as it helps students apply their knowledge of division and multiplication with 11, promoting better mental calculation skills. This understanding is foundational for tackling more complex mathematical problems.

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