First Term Lesson Note for Week Ten
Class : Primary Two
Subject : Mathematics
Topic : Subtraction of Numbers
Duration : 80 Minutes
Period : Double Period
Reference Book :
New Method Mathematics for Primary Schools, Book 2.
Lagos State Unified schemes of work for lower Primary, (Primary 1 – 3).
Online Resources
Instructional Material : Real objects such as match stick, bottle covers, and chart showing subtraction of Numbers using expanded method.
Learning Objectives : By the end of the lesson learners will be able to
i. Define Subtraction and identify sign of subtraction.
ii. Identify the various terms used for subtraction such as minus, take away, difference, and less from
iii. Solve subtraction of Numbers using expanded form without regrouping.
iv. Solve word problems on subtraction of numbers
Content :
Subtraction of Numbers
Subtraction means minus or take away or remove some set of numbers in the given numbers.
The sign of minus is ( – ).
When performing subtraction, arrange the numbers such that the larger number comes first at the top while the smaller number is under.
For example :
1. Subtraction 3 2 from 5 8 gives _______.
5 8 – 3 2 = 2 6
| T U | Expanded Method |
| 5 8 | = 5 0 + 8 |
| – 3 2 | = – (3 0 + 2) |
| 2 6 | = 2 0 + 6 |
2. 7 9 – 4 6 = 3 3
| T U | Expanded Method |
| 7 9 | = 7 0 + 9 |
| – 4 6 | = – (4 0 + 6) |
| 3 3 | = 3 0 + 3 |
3. Take away 5 7 from 8 8.
This means : 8 8 – 5 7
| T U | Expanded Method |
| 8 8 | = 8 0 + 8 |
| – 5 7 | = – (5 0 + 7) |
| 3 1 | = 3 0 + 1 |
Presentation Steps :
Step 1 : The teacher revises the previous lesson with the learners by asking them questions
Step 2 : Introduces the new topic by defining subtraction of Numbers.
Step 3 : Identify the Terms used for subtraction of numbers.
Step 4 : Solve problems on subtraction of Numbers with different methods.
Step 5 : Solve questions on subtraction using the expanded method.
Evaluation :
1. What is the difference between 5 8 and 4 8?
2. Take away 2 7 from 9 8.
3. 7 4 minus 5 1.
4. What is the value of 10 less than 3 5?
Conclusion : At the end of the lesson learners were able to answer the questions correctly.