Lesson Plan of 4Digit Numbers Subtraction
Subject Mathematics
Grade III
Students` Learning Outcomes
 Subtract numbers up to 4digits (with borrowing) vertically and horizontally.
Information for Teachers
 To subtract 4digit numbers (with borrowing):
 Firstly subtract ones. If ones in the first number are less than ones from the second number, then borrow 1 ten from the column of tens and change it for 10 ones.
 Secondly subtract tens. If tens in the first number are less than tens from the second number, then borrow 1 hundred from the column of hundreds and change it for 10 tens.
 Lastly subtract hundreds. If hundreds in the first number are less than hundreds from the second number, then borrow 1 thousand from the column of thousands and change it for 10 hundreds.
 While teaching the lesson, also consult textbook where and when applicable.
Material / Resources
Writing board, chalk/marker, duster, chart (having rules of subtraction with borrowing), Mathematics textbook
Introduction
 Write the following questions on the board:
 Ask the students` can you solve these questions? Explain, how?
 After their response, call any two students to solve the questions on the board.
 Ask the remaining students to check their work. Correct the mistakes if any.
 Conclude the result that in subtraction if the first number is less than the second number, we adopt the method of borrowing.
 Write the following question on the board:
 Call any student to solve the question on the board.
 Check the answer and tell the students that the procedure of subtraction of 2digit and 3digit numbers (with borrowing) is applicable to the subtraction of 4digit numbers.
 Ask the students to tell which method of subtraction we have used.
 Collect their feedback and write the correct answer on the board.
 Ask the students to recall the vertical and horizontal methods of subtraction.
 Tell the students that let us learn subtraction up to 4digit numbers (with borrowing) using vertical and horizontal methods with the help of examples.
Development
Activity 1
 Display the following chart in front of the class:
 Tell the rules of subtraction (with borrowing) with the help of this chart.
Activity 2
 Write the following questions on the board:
Subtract vertically:


 4865 from 6543
 4178 from 7130

 Call any two students to solve the questions on the board.
 Provide guidance where necessary.
 On completion, ask the remaining students to check the answers and correct the mistakes if any.
Activity 3
 Ask the students to solve the following question in their notebooks:
 Write in horizontal form and subtract. 1845 from 6734.
 Observe the students` work and guide the slow learners.
 At the end solve the question on the board and ask the students to check their work.
 Appreciate the students having correct answers. Facilitate the students requiring further guidance.
Sum up / Conclusion
 Revise the rules of borrowing of subtraction of 4digit numbers with the help of chart used in activity 1.
Assessment
 Ask the students to solve the following questions in their notebooks:


 Subtract 5668 from 7116 vertically.
 Subtract 6666 from 8555 horizontally.

Follow up
 Subtract the greatest 3digit numbers from the smallest 4digit number using vertical method of subtraction.
 Ask the students to solve the questions given in the textbook.