Subject: Mathematics (Numeracy) | Class: Primary 1 | Term: 3rd Term | Week: 5
Previous Lesson: Money — Nigerian Currencies — Week 4
Learning Objectives
- Recognise different denominations of Nigerian coins.
- Add or subtract coins to obtain sums not exceeding 25k.
- Calculate change obtainable from 10k or less.
Lesson 1 — Addition and Subtraction of Coins
Oral Examples:
- 5 kobo + 2 kobo = 7 kobo
- 5 kobo − 3 kobo = 2 kobo
- 10 kobo − 4 kobo = 6 kobo
- 20 kobo + 4 kobo = 24 kobo
- 18 kobo + 5 kobo = 25 kobo
Lesson Evaluation
- 5 kobo + 3 kobo = ___ kobo
- 8 kobo − ___ kobo = 5 kobo
- ___ kobo − 4 kobo = 6 kobo
- 20 kobo + ___ kobo = 24 kobo
- 18 kobo + 5 kobo = ___ kobo
Lesson 2 — Class Shopping Corner Activity
The teacher sets up a small shopping corner in the classroom. Pupils take turns as traders and customers. Prices of items:
- Bobo — ₦50
- Pencil — ₦10
- Ruler — ₦10
- Biscuit — ₦20
- Pure water — ₦10
Shopping Questions
- How much do you pay when you buy pure water and biscuits?
- How much change will you collect from ₦40 if you buy bobo and biscuit?
- How much change will you collect from ₦50 if you buy 2 pencils and a ruler?
Lesson 3 — Addition and Subtraction of Notes
Samples: ₦10 + ₦10 = ₦20 | ₦10 + ₦5 = ₦15
Exercise
- ₦15 + ₦5 = ___
- ₦50 − ___ = ₦20
- ___ − ₦4 = ₦16
- ₦20 + ₦20 = ___
- ₦20 + ___ = ₦40
Lesson Evaluation
- Recognise the different denominations of Nigerian coins and notes.
- Add and subtract two or three coins.
- Shop and receive correct change.
Next Lesson: Length — Measuring Instruments — Week 6