Addition of 3 Digit Numbers Without Remaining (Primary 2)

MATHEMATICS

SECOND TERM  

WEEK 4

PRIMARY 2

THEME – BASIC OPERATIONS 

PREVIOUS LESSON – Second Term Scheme of Work and Plan Lesson Notes for MATHEMATICS Week 1 to Week 12 Primary Schools

TOPIC – ADDITION OF 3 DIGIT NUMBERS WITHOUT REMAINING 

PERFORMANCE OBJECTIVES 

By the end of the lesson, the pupils should have attained the following objectives (cognitive, affective and psychomotor) and should be able to add 3-digit numbers without exchanging or renaming.

ENTRY BEHAVIOUR

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Number beads.

2. Bean seed.

3. Cards, etc.

4. Charts on addition of 3-digit numbers without renaming, etc.

5. Counters such as sticks, bottle tops.

6. Addition cards.

METHOD OF TEACHING – Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons. 

REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information

CONTENT OF THE LESSON  

LESSON ONE – INTRODUCTION 

Pupil’s Activities 1 – Addition by Expansion (10 minutes) 

Sample

23 + 25

23 = 20 + 3

+ 25 = 20 + 5

______________

48 = 40 + 8

54 + 35

54 = 50 + 4

35 = 30 + 5

____________

89 = 80 + 9

Expand

1. 42 + 12

2. 34 + 43

Pupil’s Activities 2 – Addition by Arranging in Tens and Units (10 minutes) 

Sample

23 + 25

T U

2 3

2 5 (+)

____

4 8

54 + 35

T U

5 4

3 5 (+)

______

8 9

Arrange in Tense and Units

1. 42 + 12

2. 34 + 43

Pupil’s Activities 3 – Exercise/Take Home (20 minutes) 

Using expansion methods

1. 55 + 34

2. 34 + 55

Arrange in Tens and Units

3. 55 + 33

4. 63 + 16

LESSON TWO – EXPANSION OF 3 DIGIT NUMBERS 

Teacher’s/Pupil’s Activities 1 – Expansion of 3 Digit Numbers (10 minutes) 

Sample

152 = 100 + 50 + 2 = 1 Hundred + 5 Tens + 2 Units

365 = 300 + 60 + 5 = 3 Hundreds + 6 Tens +5 Units

Copy and complete the following. 

1. 567 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

2. 765 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

3. 765 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

4. 765 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

 Pupil’s Activities 2 – Exercise/Take Home (20 minutes) 

1. 729 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

2. 543 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

3. 872 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

4. 725 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

5. 555 = _____ + _____ + _____ = _____ Hundreds + _____ Tens + _____ units

LESSON THREE – ADDITION BY EXPANSION OF 3 DIGIT NUMBERS

Teacher’s/Pupil’s Activities 1 – Working Examples

Sample

513 + 111

513 = 500 + 10 + 3

222 = 200 + 20 + 2 (+)

______________________

735 = 700 + 30 + 5

 

203 + 341

203 = 200 + 00 + 3

342 = 300 + 40 + 2 (+)

___________________

545 = 500 + 40 + 5

Pupil’s Activities 2 – Exercise/Take Home 

1. 212 + 234

2. 334 + 442

3. 345 + 234

4. 763 + 374

 

LESSON FOUR – ARRANGE IN HUNDREDS, TENS AND UNITS AND ADD 

Pupil’s Activities 1 = Arrange in H T U

Sample

123

H T U

1 2 3

 

436

H T U

4 3 6

Arrange in H T U

1. 323

2. 462

Teacher’s/Pupil’s Activities 2 – Arrange in H T U and Add

Add 322 and 565

H T U

3 2 2

5 6 5 (+)

________

8 8 7

456 + 321

H T U

4 5 6

3 2 1 (+)

______

7 7 7

Pupil’s Activities 2 – Exercise/Take Home 

1. 123 + 251

2. 251 + 222

3. 321 + 213

4. 501 + 120

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;

2. Guides pupils to solve addition problems of 3-digit numbers.

Pupil’s Activities – Solves addition of 3-digit numbers.

CONCLUSION

To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

LESSON EVALUATION 

Pupils to add 3-digit numbers vertically without exchanging or renaming.