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PRIMARY 1: MATHEMATICS – THIRD TERM | WEEK 3

Updated April 20, 2026Mathematics, Primary 1, Third Term

TOPIC: ADDITION AND SUBTRACTION OF MONEY

A: TEACHING AND LEARNING MATERIALS

  1. Toy naira notes.
  2. Pictures of Nigerian money.
  3. Price tags.
  4. Counters.
  5. Pupils’ writing books and pencils.

B: REFERENCE MATERIALS

  1. Scheme of work.
  2. Recommended Mathematics textbook for Primary 1.
  3. Online educational resources.

C: PREVIOUS KNOWLEDGE

The pupils can identify Nigerian money and recognise simple naira denominations.

D: PERFORMANCE OBJECTIVES

By the end of the lesson, pupils should be able to:

  1. Add simple amounts of money.
  2. Subtract simple amounts of money.
  3. Find the total cost of two items.
  4. Find simple change.
  5. Solve simple money problems.

E: CONTENT

Addition of Money

We add money when we want to know the total amount.
Example:
🍭 Sweet = ₦10
🍪 Biscuit = ₦20
Total:

₦10 + ₦20 = ₦30

More examples:

  • ₦5 + ₦5 = ₦10
  • ₦10 + ₦20 = ₦30
  • ₦20 + ₦30 = ₦50

Subtraction of Money

We subtract money when some money is spent or taken away.
Example:
Ada has ₦50.
She spends ₦20.

₦50 − ₦20 = ₦30

Ada has ₦30 left.

Finding Change

You have ₦100.
You buy a pencil for ₦60.
Change:

₦100 − ₦60 = ₦40

Your change is ₦40.

F: LESSON PRESENTATION

F1: Teachers’ Activities

  1. Revises Nigerian money with pupils.
  2. Demonstrates addition using toy money.
  3. Demonstrates subtraction using toy money.
  4. Uses price tags to show buying and selling.
  5. Explains simple change.
  6. Gives simple money problems.

F2: Pupils’ Activities

  1. Identify toy money.
  2. Add simple amounts.
  3. Subtract simple amounts.
  4. Pretend to buy and sell classroom items.
  5. Calculate simple change.
  6. Solve money exercises.

G: CONCLUSION

The teacher revises addition and subtraction of money.
The teacher encourages pupils to practise simple buying and selling activities at home.

H: EVALUATION GUIDE

Pupils should be able to answer the following questions:

  1. ₦10 + ₦10 = \_\_\_
  2. ₦20 + ₦30 = \_\_\_
  3. ₦50 − ₦20 = \_\_\_
  4. ₦100 − ₦50 = \_\_\_
  5. A pencil costs ₦20 and a ruler costs ₦30. What is their total cost?
  6. You have ₦50 and spend ₦10. How much is left?
  7. You buy a book for ₦60 and give the seller ₦100. What is your change?