1. Created by Mr. Lafferty Maths Dept.
Money
National 4
NUM 1.2
Revision of Percentages
Profit and Loss
Hire Purchase
Building & Contents Insurance
Life Insurance
Foreign Exchange
Percentage Profit
31-Mar-17
Created by Mr. Lafferty Maths Dept.

2. Compiled by Mr. Lafferty Maths Dept.
Starter Questions
National 4
NUM 1.2
31-Mar-17
Compiled by Mr. Lafferty Maths Dept.

3. Percentages (Revised)
National 4
NUM 1.2
Learning Intention
Success Criteria
1. To revise some basic percentages.
To know the basic percentages.
Calculate basic percentage without a calculator.
31-Mar-17
Compiled by Mr. Lafferty Maths Dept.

4. Percentages (Revised)
National 4
NUM 1.2
Remember from previous section you know learn these !
31-Mar-17
Compiled by Mr. Lafferty Maths Dept.

5. Percentages (Revised)
National 4
NUM 1.2
Q. Find 30% of £40
31-Mar-17
Compiled by Mr. Lafferty Maths Dept.

6. Percentages (Revised)
National 4
NUM 1.2
Q. Find 75% of £600
31-Mar-17
Compiled by Mr. Lafferty Maths Dept.

7. Percentages (Revised)
National 4
NUM 1.2
Now try Exercise 1
Ch15 (page 180)
31-Mar-17
Compiled by Mr. Lafferty Maths Dept.

8. Created by Mr. Lafferty Maths Dept.
Starter Questions
National 4
NUM 1.2
Q x 8
Q2. Multiply out the brackets and simplify
Q3.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

9. Created by Mr. Lafferty Maths Dept.
Profit and Loss
National 4
NUM 1.2
Learning Intention
Success Criteria
To understand the
terms profit and loss.
To know the meaning of the terms PROFIT and LOSS.
Apply knowledge to calculations.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

10. Created by Mr. Lafferty Maths Dept.
Profit and Loss
National 4
NUM 1.2
Profit : When you sell something for
MORE than you bought it.
PROFIT = Selling Price – Buying Price
Loss : When you sell something for
LESS than you bought it.
LOSS = Buying Price – Selling Price
31-Mar-17
Created by Mr. Lafferty Maths Dept.

11. Profit and Loss www.mathsrevision.com Example 1
National 4
NUM 1.2
Example 1
If I buy a Playstation for £100 and sell it for £120.
I have made a PROFIT of
£120-£100 = £20
Example 2
I bought a bunch of flowers for £5.50 and tried to sell them for a profit. But I found it difficult to sell them. I sold them for £4.00 before they went off.
I made a LOSS of
£ £4.00 = £1.50
31-Mar-17
Created by Mr. Lafferty Maths Dept.

12. Created by Mr. Lafferty Maths Dept.
Profit and Loss
National 4
NUM 1.2
Now try Ex 2
Ch15 (page 182)
31-Mar-17
Created by Mr. Lafferty Maths Dept.

13. Created by Mr. Lafferty Maths Dept.
Hire Purchase
National 4
NUM 1.2
Learning Intention
Success Criteria
To understand the
terms Hire Purchase.
To know the meaning of the terms HIRE PURCHASE.
Apply knowledge to calculations.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

14. Created by Mr. Lafferty Maths Dept.
Starter Questions
National 4
NUM 1.2
Q1. Expand out 2j (k – 5g + 4jk)
Q2. Find all the missing angles
25o
Q3.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

15. Created by Mr. Lafferty Maths Dept.
Hire Purchase
National 4
NUM 1.2
Hire Purchase : When you pay for goods by
putting down a deposit and then
paying the rest up in small fixed
payments over a period of time.
Normally you pay more for the goods using this method.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

16. Hire Purchase www.mathsrevision.com Buying Products
National 4
NUM 1.2
Buying Products
Hoover Cash Price £365.50 or
by H.P. £75 deposit + 12 Payment £28.80
How much more do you pay by using Hire Purchase
Total H.P. price =
£ x £28.80 = £420.60
Difference in price =
£ £ = £55.10
31-Mar-17
Created by Mr. Lafferty Maths Dept.

17. Loans & Hire Purchase www.mathsrevision.com Buying Products
National 4
NUM 1.2
Buying Products
Washing Machine Cash Price £365.50 or
by H.P. £75 deposit + 12 Payment £28.80
How much more do you pay by using Hire Purchase
Total H.P. price =
£75
+ 12 x £28.80 = £420.60
Difference in price =
£ £ = £55.10
31-Mar-17
Created by Mr. Lafferty Maths Dept.

18. Created by Mr. Lafferty Maths Dept.
Hire Purchase
National 4
NUM 1.2
Now try Ex 3
Ch15 (page 185)
31-Mar-17
Created by Mr. Lafferty Maths Dept.

19. Created by Mr. Lafferty Maths Dept.
Starter Questions
National 4
NUM 1.2
Q1. Expand out 2a (a – c + 4ab)
Q2. Find the missing angle
22o
Q3.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

20. House & Contents Insurance
National 4
NUM 1.2
Learning Intention
Success Criteria
To explain the how to calculate building and contents insurance for a house.
Why we have house building insurance.
2. Calculate the value of building and content insurance given the value of the house and contents.
31-Mar-17
Created by Mr. Lafferty
Maths Dept

21. House & Contents Insurance
Roof, walls, floor etc...
National 4
NUM 1.2
You NEED to buy building insurance in case anything
goes wrong with your house.
TV, DVD, Washing Machine
It is a good idea to buy content insurance in case your
house gets broken into or items breakdown.
31-Mar-17
Created by Mr. Lafferty
Maths Dept

22. House & Contents Insurance
National 4
NUM 1.2
Items
Charge
Building per £1000
£0.73
Contents per £1000
£3.57
31-Mar-17
Created by Mr.Lafferty Maths Dept

23. House & Contents Insurance
National 4
NUM 1.2
Example 1 : How much is the House Insurance for a
house valued at £
Value
Premium
(cost of Insurance)
£1 000
£0.73
£40 000
£29.20
31-Mar-17
Created by Mr. Lafferty
Maths Dept

24. House & Contents Insurance
National 4
NUM 1.2
Example 2 : I decided to increase my insurance from
£ to £ cover.
How much more did it have to pay.
Value
Premium
(cost of Insurance)
£1 000
£0.73
£10 000
£7.30 more
31-Mar-17
Created by Mr. Lafferty
Maths Dept

25. House & Contents Insurance
National 4
NUM 1.2
Example : How much for Buildings insurance and
contents insurance if a house is valued at £ and contents are valued at £5 000.
Buildings insurance :
£58.40
Contents insurance :
£ 17.85
Total : £76.25
31-Mar-17
Created by Mr. Lafferty
Maths Dept

26. Created by Mr. Lafferty Maths Dept.
Household Insurance
National 4
NUM 1.2
Now try Ex 4
Ch15 (page 188)
31-Mar-17
Created by Mr. Lafferty Maths Dept.

27. Starter Questions www.mathsrevision.com National 4 NUM 1.2 31-Mar-17
Created by Mr. Lafferty
Maths Dept

28. Created by Mr.Lafferty Maths Dept
Life Insurance
National 4
NUM 1.2
Learning Intention
Success Criteria
To calculate Life Insurance from a table of values taking account various factors.
1. Read information from a chart.
2. Calculate Life Insurance taking in various factors.
31-Mar-17
Created by Mr.Lafferty Maths Dept

29. Life Insurance www.mathsrevision.com
What factors affect the cost of Life Insurance
Age,
Male or Female, smoker
or Non- smoker
Life Insurance
National 4
NUM 1.2
Table shows monthly premiums.
The sum assured is £10000 (with Profits) for the term 20 years.
Age
Male smoker
Female smoker
Male
non-smoker
Female 20
1.25
1.02
0.77
0.57 25
1.36
1.11
0.86
0.66 30
1.48
1.20
0.96
0.75
31-Mar-17
Created by Mr.Lafferty Maths Dept

30. Life Insurance www.mathsrevision.com Table shows monthly premiums.
National 4
NUM 1.2
Table shows monthly premiums.
The sum assured is £10000 (with Profits) for the term 20 years.
Age
Male smoker
Female smoker
Male
non-smoker
Female 20
1.25
1.02
0.77
0.57 25
1.36
1.11
0.86
0.66 30
1.48
1.20
0.96
0.75
Kerry is 25 years old and takes out a fixed term policy. She does not smoke. She wants to leave £ to her dependants should she die. What is her monthly premium and how much will she pay over 20 years.
31-Mar-17
Created by Mr.Lafferty Maths Dept

31. Created by Mr.Lafferty Maths Dept
Life Insurance
National 4
NUM 1.2
Monthly premium = ÷ x 0.66 = £9.90
Total paid over 20 years = £9.90 x 12 x 20 = £2376
31-Mar-17
Created by Mr.Lafferty Maths Dept

32. Created by Mr.Lafferty Maths Dept
Life Insurance
National 4
NUM 1.2
Now try Exercise 5
Ch15 (page 191)
31-Mar-17
Created by Mr.Lafferty Maths Dept

33. Created by Mr. Lafferty Maths Dept.
Starter Questions
National 4
NUM 1.2
Q1. Expand out 2a (a – c + 4ab)
Q2. Find two missing angles
32o
Q3. Find y
Q4. The answer is 45. What is the question.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

34. Created by Mr. Lafferty Maths Dept.
Foreign Exchange
National 4
NUM 1.2
Learning Intention
Success Criteria
To explain how to convert £’s to another currency and vice versa.
1. Be able to convert £’s to another currency.
Be able to convert back to £’s.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

35. Converting to a foreign currency
Currency Exchange
Converting to a foreign currency
Foreign currency
x exchange rate
Converting back to £’s
Foreign currency
÷ exchange rate
Created by Mr. Lafferty
Maths Dept

36. Created by Mr. Lafferty Maths Dept.
Foreign Exchange
National 4
NUM 1.2
Think going on holiday !
The currency in most of Europe is the euro €
The exchange rate is approximately
£ 1  1.54 €
Converting £’s to Euros € simply multiply
(a) To change £80 to euros
80 x 1.54 = €
31-Mar-17
Created by Mr. Lafferty Maths Dept.

37. Created by Mr. Lafferty Maths Dept.
Foreign Exchange
National 4
NUM 1.2
Now try Ex 6 Q1 to Q5
Ch15 (page 193)
31-Mar-17
Created by Mr. Lafferty Maths Dept.

38. Foreign Exchange www.mathsrevision.com
National 4
NUM 1.2
Coming back from holiday we want to do the opposite
i.e. euros to £’s
Think
back from holiday !
The exchange rate is approximately
£ 1  1.54 €
Converting Euros €’s to £’s simply divide
To change 616 € to £’s
616 ÷ 1.54 =
£400
31-Mar-17
Created by Mr. Lafferty Maths Dept.

39. Created by Mr. Lafferty Maths Dept.
Foreign Exchange
National 4
NUM 1.2
Now try Ex 6 Q6 to Q12
Ch15 (page 194)
31-Mar-17
Created by Mr. Lafferty Maths Dept.

40. Created by Mr. Lafferty Maths Dept.
Starter Questions
National 4
NUM 1.2
10cm
8cm
31-Mar-17
Created by Mr. Lafferty Maths Dept.

41. Calculating Percentages
Percentage Increase / Decrease
National 4
NUM 1.2
Learning Intention
Success Criteria
To understand how to calculate percentage increase / decrease.
To understand how to calculate percentage increase / decrease.
Solve problems in context.
31-Mar-17
Created by Mr. Lafferty Maths Dept.

42. Calculating Percentages
Percentage Increase / Decrease
National 4
NUM 1.2
Example 1 : Daniel was paid £20 per week. He got a wage rise to £22 per week.
What was his percentage increase in pay ?
Actual Increase = £22 - £20 = £2
% increase =
31-Mar-17
Created by Mr. Lafferty Maths Dept.

43. Calculating Percentages
Percentage Increase / Decrease
National 4
NUM 1.2
Example 1
A shopkeeper buys crisps for 20p each.
He sells them for 28p.
What is his percentage profit?
Actual Increase = 28p – 20p = 8p
% increase =
31-Mar-17
Created by Mr. Lafferty Maths Dept.

44. Created by Mr. Lafferty Maths Dept.
Percentage Profit
National 4
NUM 1.2
Now try
Extension Booklet
2E (page 79)
31-Mar-17
Created by Mr. Lafferty Maths Dept.