Solving 4th-grade math on pages 80-81 in the Knowledge Connection Series, Volume 1 Textbook: Exercise 23 - Subtracting multi-digit numbers

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Content

Solving 4th-grade math on pages 80-81 in the Knowledge Connection Series

Exercise 23: Subtracting Multi-digit Numbers

Solving 4th Grade Math Volume 1 ICT Textbook: Activity on page 80

Solving Exercise 1 on page 80 of 4th Grade Math Volume 1 Knowledge Connection Textbook

Solving Exercise 2 on page 80 of 4th Grade Math Volume 1 Knowledge Connection Textbook

Solving Exercise 3 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Solving 4th Grade Math Volume 1 ICT Textbook: Practice on page 81

Solving Exercise 1 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Solving Exercise 2 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Solving Exercise 3 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Solving Exercise 4 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Solving 4th-grade math on pages 80-81 in the Knowledge Connection Series, Volume 1 Textbook: Exercise 23 - Subtracting multi-digit numbers. The detailed solutions for exercises 1, 2, 3... are provided, giving students comprehensive guidance according to the curriculum. Students can refer, compare, and cross-check their solutions.

Additional recommended 4th-grade Math learning materials:
- Solving 4th-grade Math in the Knowledge Connection Series
- Solving 4th-grade math on pages 64, 65, 66 in the Kite book, Volume 1 - Exercise 26: Addition, subtraction
- Solving 4th-grade math on page 10 in the CSTT book, Volume 1 - Exercise 2: Reviewing addition, subtraction

Solving 4th-grade math on pages 80-81 in the Knowledge Connection Series

Exercise 23: Subtracting Multi-digit Numbers

Solving 4th Grade Math Volume 1 ICT Textbook: Activity on page 80

Solving Exercise 1 on page 80 of 4th Grade Math Volume 1 Knowledge Connection Textbook

Problem: Set up the problem and solve it.

36,724 - 3,291

637,891 - 412,520

895,332 - 282,429

Solution:

Solving Exercise 2 on page 80 of 4th Grade Math Volume 1 Knowledge Connection Textbook

Problem:

While flying for 5 minutes, how many times does a mosquito flap its wings more than a bee?

Solution:

Solving Exercise 3 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Problem:

The fuel tank of a green airplane can hold 240,373 liters. The fuel tank of a pink airplane can hold 25,350 liters. Determine which airplane's fuel tank has more capacity and by how many liters?

Solving 4th Grade Math Volume 1 ICT Textbook: Practice on page 81

Solving Exercise 1 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Problem: Number?

Solution:

Solving Exercise 2 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Problem: Find the suitable digit.

Solution:

Solving Exercise 3 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Problem: Robot invites Mai, Nam, Việt, and Mi to watch a movie. The total ticket cost for Mai, Nam, Việt, and Robot is 320,000 dong, and Mi's ticket is 50,000 dong. Robot gives a 500,000 dong note to the ticket seller. How much change does the ticket seller have to give back to Robot?

Solution:

Solving Exercise 4 on page 81 in Mathematics for 4th Grade Volume 1 - Connecting Knowledge Series

Problem: Robot writes the number 2,130,574 on the board.

Remove any digit to obtain a six-digit number.

a) Find the largest and smallest numbers possible after deletion.

b) Find the difference between the largest and smallest numbers found in part a.

Solution:

Here is the solution for 4th-grade Mathematics - Connecting Knowledge Series, pages 80-81, Subtraction of multi-digit numbers. For further reference, students can check Solving math on page 83, 84, 85 in Connecting Knowledge Series - Exercise 24: Commutative and associative properties of addition or revisit Solving math on page 77, 78 in Connecting Knowledge Series - Exercise 22: Addition of multi-digit numbers to reinforce their understanding.

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