Addition of Fractions with the Same denominators

Subject : 


Term :

First Term


Week 9

Class :

Primary 3/ Basic 3

Topic : Addition of Fractions with the same denominators

Previous lesson : 

The pupils have the previous knowledge of Addition of Three Digit Numbers Without Regrouping


Behavioural objectives :

At the end of the lesson, the pupils should be able to

  • Add up figures that are written in three digits under Hundreds, Tens and Units
  • Arrange the sums of three digit numbers correctly under Hundreds, Tens and Units without making mistakes
  • Calculate the total of three digit figures without making mistakes


Instructional Materials :

  • Wall charts
  • Pictures
  • Related Online Video
  • Flash Cards
  • Lagos state scheme of work on Mathematics
  • Text Books
  • Workbooks
  • Pebbles
  • Abacus

Methods of Teaching :

  • Class Discussion
  • Group Discussion
  • Asking Questions
  • Explanation
  • Role Modelling
  • Role Delegation


Reference Materials :

  • Scheme of Work
  • Online Information
  • Textbooks
  • Workbooks
  • 9 Year Basic Education Curriculum
  • Workbooks


Content :

Numerators are the numbers that are written on top of Fractions while denominators are the numbers that are written under the Fractions.

Given a fraction one over four (1/4)

One is the numerator

Four is the denominator.

In this lesson we want to discus about the addition of Fractions with the same denominators.

When ever we want to add up Fractions with the same denominators, we just sum up the Numerators and the value of the denominators we not change because it was just the Numerators that we added together.

More samples :

1.Add up 1/9 and 2/9

Solution. You will need to sun up the Numerators which are 1 and 2

1 plus 2 equal to 3

Answer equals to 3/9


Sample 2

Find the sum of 3/8 and 2/8

3+2 = 5

Answer = 5/8






The topic is presented step by step


Step 1:

The class teacher revises the previous topics


Step 2.

He introduces the new topic


Step 3:

The class teacher allows the pupils to give their own examples and he corrects them when the needs arise




The class teacher wraps up or conclude the lesson by giving out short note to summarize the topic that he or she has just taught.

The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.

He or she does the necessary corrections when and where  the needs arise.



  1. 1/4 plus 1/4
  2. 1/9 +7/9
  3. 1/2 ➕ 1/2
  4. Add together 1/7 plus 2/7



Prepare for the next lesson by reading about

Addition of fraction with the same denomination

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