WEEK FOUR

SUBJECT: Mathematics

CLASS: Primary four

TOPIC: Addition and subtraction of money

SUB TOPIC: Shopping

Behavioural Objectives: At the end end of the lesson, the pupils should be able to:

- Add the sums of money together
- Subtract sums of money ADDITION OF MONEY

Example 1

Add #10.80 and #4.40

10 . 80

- 4 . 40

……………………

15 . 20

……………………

Example 2

Add

# . K

29 . 17

+36 . 18

………………..

65 . 35

………………..

SUBTRACTION OF SUMS OF MONEY

Example 1

Subtract #67.98 – #41.27

Solution

Note: In subtraction, the higher number must be written first follow by the lower number.

# . K

67 . 98

– 41 . 27

………………….

26 . 71

………………….

Example 2:

Subtract #51.88 – #21.59

Solution

# . K

51 . 88

21. 5 9

=30.29

PROBLEMS ON ADDITION OF MONEY

Example:

Obi went to a market. He bought a tuber of yam for #420.25, pepper for #70.20 and garri for #500.00. How much did he spend in the market?

Solution

A tuber of yam – 420. 25

Pepper –

70.20

Garri- 500. 00

# . K

420 . 25

70 . 20

+500 . 00

………………..

990 .45

………………..

He spent #990.45 in the market.

PROBLEMS ON SUBTRACTIONS OF MONEY

Example 1

A radio cost #2, 175.00, Ibrahim gives the store keeper #3,000.00. How much change does he receive?

Solution

# . K

3000 . 00

-2175 . 00

………………….

825 . 00

………………….

.

. . Ibrahim received #825.00 change.

` Example 2`

What is the difference between the cost of the radio at #2,175.00 and the cost of the bag at #1380.00.

Solution

# . K

2175 . 00

-1380 . 00

…………………

795 . 00

…………………

Exercises:

Man Primary Mathematics book 4, page 158 Exercises F question 1 – 10.

For further question, call this number – 09079895255. Thanks

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