Subtraction of two 3- digit numbers without renaming or exchanging. Counting and writing skill: 530- 550.

Lesson Plan: Subtraction of 3-Digit Numbers without Renaming

Topic: Subtraction of two 3-digit numbers without renaming or exchanging 

Subject: Mathematics

 Class Group: Basic 2

Objectives:

1. Identify the place value of 3-digit numbers.
2. Subtract 3-digit numbers without renaming or exchanging.
3. Apply counting and writing skills to solve word problems.
4. Develop problem-solving skills using real-life scenarios.

 Content:

 Place Value of 3-Digit Number

place value of each digit in a 3-digit number:432

• Hundreds place - 400 in 432
• Tens place - 30 in 432

• Ones place - 2 in 432

  place each number in its value

  • 247
  • 935
  • 118

Subtraction of 3-Digit Numbers without Renaming

• Introduce the concept of subtracting 3-digit numbers without renaming or exchanging.

• Use examples to demonstrate the process:

     579 

  - 242= 337

   

      978

   - 345 = 633

     

     759 

  - 423 = 336

  class activity

• Have students work in pairs to solve the following subtraction problems:
  • 694 - 237 =
  • 874 - 453 =
  • 247 - 116 =

 Word Problems

• Provide word problems that involve subtracting 3-digit numbers without renaming or exchanging:
  • Tom had 579 pencils in his pencil case. He gave 247 pencils to his friend. How many pencils does Tom have left?
  • A bookshelf has 978 books on it. If 345 books are removed, how many books are left on the bookshelf?
  • A store has 759 boxes of cereal. If 423 boxes are sold, how many boxes of cereal are left in the store?
• Have students work individually to solve the word problems.

Counting and Writing Skills (530-550)

• Have students count and write numbers from 530 to 550.
• Ask students to identify the numbers that are closest to 540 (e.g., 539, 541).
• Have students write a short paragraph using numbers between 530 and 550 (e.g., "I have 537 pencils in my pencil case. My friend has 542 pencils.").

Assessment:

• Observe students during the subtraction activities to assess their understanding.
• Review their work on the word problems to assess their ability to apply subtraction skills to real-life scenarios.
• Evaluate their counting and writing skills through the paragraph writing activity.

Conclusion:

• Review the key concepts learned during the lesson.
• Emphasize the importance of subtracting 3-digit numbers without renaming or exchanging.
• Provide feedback and encouragement to students.