# Money – Addition and Subtraction of Money and Everyday Business Transactions (Primary 4)

MATHEMATICS

WEEK 7

SECOND TERM

PRIMARY 4

THEME – MENSURATION AND GEOMETRY

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

TOPIC – ADDITION AND SUBTRACTION OF MONEY

LEARNING AREA

2. Subtraction of Money

4. Quantitative Reasonings

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 –

1. solve problems on addition of money.

2. solve quantitative aptitude problems on additions of money.

3. solve problem on subtraction of money.

4. solve quantitative aptitude problems involving subtraction of money.

ENTRY BEHAVIOUR

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Empty containers of milk, Geisha, tomato, sugar etc.

2. Basic addition table for money.

3. Real and model money.

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 TO MONEY

Teacher’s/Pupil’s Activities 1 – Identification and Uses of Money ₦1000, ₦500, ₦200, ₦100, ₦50, ₦20, ₦10 and ₦5 notes.

Uses of Money – As stated by the pupils.

1. It is used for buying and selling.

2. It is used for paying school fees.

3. It is used paying house rent.

4. It is used for paying transport fares, etc.

Teacher’s/Pupil’s Activities 2 – Unit of Money (Nigeria and other Countries)

Unit is the money that is used in a particular country. For example, in Nigeria, we used Naira (₦). In America, it is called dollar (\$). In China, it is Yen ¥, etc.

₦1 = 100 k

₦1.1 = 100 k + 10 k

₦1.2 = 100 k + 20 k

₦1.3 = 100 k + 30 k

₦1.4 = 100 k + 40 k

₦1.5 = 100 k + 50 k = 150 k

₦2 = 100 k + 100k = 200k

₦3 = 300 k

₦4 = 400 k

₦5 = 500 k

Teacher’s/Pupil’s Activities 3 – Naira and Kobo

Working Examples

Change ₦2.50 to Kobo.

= ₦2 + 50 k

= 200 k + 50 k

= 250 k

Change 130 k to Naira.

= 100 k + 30 k

= ₦1 + 30

= ₦1.3

Pupil’s Activities 4 – Class Exercise/Take Home

Change the following to Naira,

1. 627 k

2. 710 k

Change the following to kobo

3. ₦5

4. ₦2.5

5. ₦3

LESSON TWO – REPEAT THE CONVERSION OF NAIRA TO KOBO AND VICE VERSA

LESSON THREE – ADDITION AND SUBTRACTION OF NAIRA

Pupil’s Activities 1 – Addition of Numbers (Oral Questions)

7 + 3 = 10

15 — 5 = 10

25 — 10 = 15

55 + 15 = 40

₦7 + ₦3 =

₦50 — ₦24 =

Teacher’s/Pupil’s Activities 2 – Addition of Money

Working Examples

Subtract ₦15.58 from ₦13.45

Solution

₦13.48

₦15.30 (+)

________

₦28.78

Subtract

₦15.58

₦13.45 (—)

________

₦02.13

Take one or two more examples with them.

Pupil’s Activities 3 – Class Exercise/Take Home

1. ₦63.70 and ₦45.14

2. ₦134.72 and ₦140.02

Subtract the following numbers together,

3. ₦46.60 – ₦32.20

2. ₦720 – ₦120.30

LESSON FOUR – PROFIT AND LOSS

Teacher’s/Pupil’s Activities 1 – Everyday Business Transactions

Working Examples

1. Ayomide bought packet of pencil For ₦50.52, a book for ₦28.32 and an eraser for ₦5.00, how much did he spend?

₦50.52

₦28.32 (+)

_______

₦78.84

₦05.00 (+)

_______

₦83.84

Therefore, Ayomide spent 83.84 on pencil, book and easer.

2.A man went to the market with ₦90.50. if he spent ₦25.76 on a Book, how much balance did he Collect?

₦90.50

₦25.76 (—)

_______

₦64.44

Therefore, the man has a balance of ₦64.44.

Pupil’s Activities 2 – Class Exercise/Take Home

1. Michael bought packet of book For ₦70.42, a pencil for ₦58.32 and a ruler for ₦4.00, how much did he spend?

2. A woman went to the market with ₦ 80.50. if he spent ₦35.76 on a Book, how much balance did she Collect?

LESSON FIVE – QUANTITATIVE REASONING

As stated in the quantitative book or textbook.

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 problems on addition of money e.g.

• ₦7.50 + ₦6.30 = ₦15.80
• ₦3.80 + ₦7.30 = ₦11.10

Pupil’s Activities – Solve some problems on addition of money.

3. Guides pupils to solve quantitative aptitude problems involving addition of money.

Pupil’s Activities – Solve quantitative aptitude problems involving addition of money.

4. Guides pupils to relate correctly, addition of money in business transactions as a customer or dealer of goods and services.

Pupil’s Activities – Relate on correct addition of money in business transaction as a customer or dealer of goods and services.

5. Guides the pupils to engage in mock buying and selling which will involve the collection of change.

Pupil’s Activities – Act as shop keepers or customers in mock buying and selling which will involve the collection of change.

6. Guides pupils on the subtraction of money e.g. ₦9.50 – ₦6.20 = ₦3.30

Pupil’s Activities – Solve problems on the subtraction of money.

7. Leads pupils to note the importance of correct subtraction of money in business transaction.

Pupil’s Activities – State correctly the importance of correct subtraction of money in business transaction.

8. Solves quantitative aptitude problems involving subtraction of money.

Pupil’s Activities – Solve some quantitative aptitude problems related to money subtraction.

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:

1. solve given problems on addition of money;

2. solve quantitative reasoning problems involving money.

3. state two or three reasons why addition of money is important in business transactions.

4. solve quantitative aptitude problems involving the subtraction of money.

5. solve quantitative problems.