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ARKS KEYS TO NUMERACY
WHAT I KNOW, WHAT I NEED TO KNOW
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WHAT I KNOW, WHAT I NEED TO KNOW
In this section you will:
q Look at some everyday number problems
q Have a go at working them out
q Find out what you already know and what you might need to brushup on
q Find suggestions of where to go next
This section is designed to let you have a go at some everyday numeracy problemsthat you might come across.
Work through the section to help you get an idea of what you already knowand which areas you feel you need more practice with.
You will probably surprise yourself and find that you know more than you think.
At the end of each topic worksheet you are asked whether you found it easy, hardor would like to do more. If you found the work hard or would like to domore, then a suggestion of which section to go to is given.
Remember these sheets are not tests, they are simply to give you an indicationof what you know already and where you would like to start working.
Objectives
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PERCENTAGES
Percentages appear in a variety of places in everyday life
For example:
q as special offers with 20% off
q the rate of interest at the bank or on a loan. Manufacturers sometimesoffer 10% extra free to encourage you to buy their goods.
Have a go at working out these percentages.
Activity 1
The local DIY store is having a sale. The following items have been reduced bydifferent percentages.
Work out the new sale price for each item.
HAVE
A GO
Activity
25% OFFWas20NOW
___
5%OFF Was 5
NOW ___
10%OFF
20% OFF 75%
OFF
Was5NOW
___
Was 12NOW ___
Was150NOW___
1. 2.
3. 4.
5. 6.
CEMENT
Was 12.691/
3OFF
NOW ____
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MEASURING AND THE METRIC SYSTEM
Measuring can be part of a wide range of activities that you may have to do atsome time. For example:
q before you can buy a new carpet, you need to measure the size of theroom
q you may have to check the size of a particular space before placing apiece of furniture in it
q when buying new clothes you need to know your measurements in orderto select the right size
q if you are doing some repairs around the house or garden, measurementsoften have to be taken.
Activity 2
Try these exercises and find out how much you know about measuring.
Circle the answer you think is the nearest estimate:
1. The average height of a man 2 metres 3 metres 1 metre
2. The height of a can of coke 20 cm 50 cm 5 cm
Measure the size of this page in cm.
3a. Length
b. Width
4. How many millimetres are in a centimetre?
5. How many centimetres are in a metre?
HAVE
A GO
Activity
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Activity 2 continued
6. What is the perimeter (outside measurements) of this football pitch?
7. How much linoleum must the manager of a shop order for the entrancehall if it measures 35m long and 4m wide? ____________ square metres(m2).
Evaluation Questions
Did you remember how to make these calculations? Yes No
Did you find them
Easy
Hard
Would like to do more?
If you would like to find out more about measuring, have a look at the Measuringsection.
120m
70m
Activitycontinued
What doyou think?
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SHOPPING
Every time you go shopping you are faced with calculations. How much will it cost?Have you been given the right change? Can you afford another item or not?
Activity 3
Shopping List
Tin of Tuna 50p
Baked Beans 12pBiscuits 25pSugar 50pBread 42p
1. Estimate the cost of this shopping list by rounding the prices up or down.
2. What is the actual cost of my shopping bill?
3. You can check your answer by adding the figures up in a different order.What change will I get from 5?
HAVE
A GO
Activity
TUNA
BAKEDBEANS
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Activity 3 continued
Now look at the shopping lists below. Work out the cost of each shopping list.
Estimate first then calculate. Put your answers in the grid below.
Now work out how much change I will get from 5 for each list.
Shopping List 1 Shopping List 2
Baked Beans 12p Bread 42pBread 42p Biscuits 25pSugar 50p Tin of Tuna 50p
4a.List 1 List 2
Estimate
Calculate
Change
4b. Whilst wandering around the supermarket you pick up several items not onyour original lists (the lists at the top of the page). A lettuce at 45p, a bag ofapples at 1.50, 2 bags of crisps at 34p each and a lemon at 15p.
5. How much extra have you spent? Again estimate and calculate.
Estimate Calculate
Evaluation Questions
Did you find this activity Easy
Hard
Would like to do more?
If you would like to practise more of these calculations, look at the Four Rulessection of this pack.
Activitycontinued
What doyou think?
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RECIPES
What do you do when you want to try a new recipe from a cook book and
the quantities given are too much or not enough for the number of peopleyou are cooking for?
Activity 4
Have a look at this recipe for scones. The cook book states that these quantitieswill make 8 scones, enough for 4 people. However you need to bake at least 16 tofeed your guests. How would you work out the new quantities?
SCONES (MAKES 8 SCONES)
225g self raising flour
40g butter/marg
150 ml milk
11/2
tablespoons caster sugar
pinch of salt
Sift flour into bowl and rub in butter. Stir in salt and sugar and gradually mix inthe milk. Knead mixture into a soft dough.
Roll dough out on a floured board to 2cm thick. Cut out as many scones as you canwith a round pastry cutter.
Place scones on a greased baking sheet and cook for 12 - 15 minutes at 425F,220C, or Gas mark 7. Eat when fresh covered in butter and jam of your choice.
Write down the new quantities you will need to make 16 scones.
Activity 4 continued
HAVE
A GO
Activity
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Evaluation Questions
Did you find this activity Easy
Hard
Would like to do more?
If you would like to know more about calculating ratios, look at the Ratio andProportion section of this pack.
A DAY AT THE RACES
What doyou think?
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A day at the races can be great fun but do you know how the betting systemworks?
Musselburgh Race Course, near Edinburgh, holds race meetings every few months.A group of friends from the office have decided to treat themselves to a day out ata race meeting.
The line up for the first race and the odds on the horses are as follows:
Horse Odds
Gypsy Queen 5:1
Lightfoot 2:1
Blackstar 10:1
Fair Lady 4:1
Lucy Streak 9:1
What do racing odds mean?
Gypsy Queen has odds of 5 : 1. This means that, if she wins a race, for every 1 youbet you get 5 back, plus your original 1 stake.
The bookies (book keepers) work out the odds by estimating which horses aremost likely to win and thus get the most bets placed on that particular horse. Thefavourite always has the lowest odds, meaning that if it wins, less money will haveto be paid out. The horse least likely to win will have the highest odds and placinga bet on this horse could bring in a good return, but only if it wins.
Activity 5
HAVE
A GO
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1. The office party decide to pool their betting money. They put 5 on FairLadyand 5 on Lightfoot. If either of these horses wins how much will they
get?
2. Which horse do you think is the favourite in this race?
3. Which horse is least likely to win?
4. How much could you win if Lucky Streakcame in first and you had put a 1bet on?
Activity 5 continued
Activity
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5. Jerry puts 3 on Blackstarand is surprised when he wins. How much hashe won?
Evaluation Questions
Did you find this activity Easy
Hard
Would like to do more?
If you would like to practise more of these calculations, look at the Ratio andProportion section in this pack.
Activitycontinued
What doyou think?
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ORDERING STATIONERY
If you work in an office someone will be responsible for looking after the stationery.
This usually means keeping an eye on the levels of stock and placing new orderswhenever supplies are low. How would you know when to place an order and howmuch should you order? Most people with this responsibility work out a system toensure stocks never fall below a certain amount and when this amount is reachedthey know it is time to re-order the necessary items.
Activity 6
Imagine you are in charge of ordering stationery for the office. You are responsiblefor keeping a regular supply of the following items:
Paper 2.10 per pack
Pens 10p each
Folders 40p each
Envelopes 75p for 10
After checking your stock, you decide to order the following items. How much will
your order cost?
1. 5 packs of paper
2. 10 blue pens
3. 10 black pens
4. 5 folders
5. 40 envelopes
6. Total cost
Estimate Calculate Check
Activity
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PLAYSCHOOL OUTING
Often in everyday life you will need to calculate the costs of several things and
add them all together. You may need to work out the cost of a family holiday, thetotal amount it will cost to take a party of children out for the day or how mucheverything will cost for a birthday party for a certain number of people.
Activity 7
Your local playschool has asked you to organise their outing to the zoo. It is expectedthat 20 children and 4 adults will go on the outing.
You have the following information:
q Entrance to the zoo costs 4.00 per child and 6.00 per adult.
q Hiring a coach will cost 50.50.
1. How much will the outing cost altogether?
Estimate Calculate Check
2. If each child is asked to contribute 5.00 how much, including the adultsentrance fees, will the playschool funds have to contribute?
Estimate Calculate Check
Activity
HAVEA GO
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Can you think of any other examples where you might have to work out the costsin a similar way?
Evaluation Questions
How did you get on in this activity?
Did you find this activity Easy
Hard
Would like to do more?
If you would like to know more about calculating ratios, look at the Four Rulessection of this pack.
What doyou think?
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CHECK YOUR NUMBER POWER
PART 1
Activity 8
Have a go at the following problems and see how you get on. These are not a testbut rather a way for you to find out what you know and what you feel you need tobrush up on. Once you have finished Part 1 check your answers. If you find Part 1quite easy go on and have a go with Part 2.
1. 45 72 94+ 32 + 56 + 53
2 6.50 2.54 8.39+ 4.50 + 1.63 + 6.21
3. 6 x 7p = 4 x 7 = 5 x 50p =
4. 32 8 = 48 6 = 72 9 =
5. 1/2
of 10
6. 50% of 30
7. 2.45cm + 1.20cm
8. Write 3.30pm in the 24 hour clock
9. Which is the best buy?1 litre at 4.20 or 2 litres for 8.30
10. Which is smaller?150cm or 1.25m
HAVEA GO
Activity
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CHECK YOUR NUMBER POWER
PART 2
Activity 9
Work through the following questions and see how you get on. This should help togive you an idea of what you know and what you feel you need to learn. Once youhave finished check your answers with those at the end of this section.
1. 346+ 785
2. 906.34- 223.22
3. 645x 23
4. 2 941 53 =
5. 1/2
+ 1/4=
6. 25% of 100
7. If there is a ratio of 5:9 men to women in a group, how many men
and women are there if there are 28 altogether?
8. What is the area of a room 4m by 6m?
9. How many centimetres are there in one metre?
10. 63/
4+ 4
1/2
HAVE
A GO
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How are you with the multiplication tables? Try these.
2 x 9 = 9 x 6 = 6 x 7 =
10 x 4 = 7 x 5 = 3 x 7 =
8 x 6 = 4 x 6 = 5 x 8 =
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Decimals and Fractions crossnumbers - Have a go
Activity 10
Across Down
1.1/
2of 300 1.
1/4
of 60
2. 10 x 4.5 3. 47.5 + 2.5
4.1/
5of 25 5. 66.5 + 28.5
6.1/
3of 24 8.
2/3
of 21
7. 10 x 5.5 10. 26.8 - 5.8
9.1/
10of 70 12.
1/5
of 100
11.1
/4of 160
12.1/
3of 63
13.2/
5of 10
Evaluation Questions
Did you find this activity EASY or HARD ?
If you found this task hard, have a look at the Fractionsand Decimalsections.
Activity
What do
you think?
1 2 3
4 5
6 7
8 9 10
11 12
13
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TIME - DO I HAVE TIME
Time and how we use it is important. In the morning we awake to the alarm clock
and collect the paper which has the day and date on it. If I have to arrange ameeting or an appointment, I have to check my diary to make sure I have nothingelse on at that time. I have to estimate how much time I have for a task at home orat work and when to go to catch the bus to get me somewhere on time. Trains,buses, ferries and aeroplanes have strict schedules as do schools, TV and radioprogrammes, otherwise when would viewers know when to turn on for theirfavourite programmes?
Much of our lives are ruled by time. We organise our daily routines around timeand we need to know how much we can fit into any given time be it work, play orfamily.
The units we use to measure time are:
Minute = 60 seconds Hour = 60 minutes
Day = 24 hours Week = 7 days
Month = 30 days (roughly 4 weeks)
Year = 12 months (365 days/366 leap year - every 4 years)
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Activity 11
Fill in the following calendar with your daily and weekly schedules. Think about
what time you will have to learn your numeracy skills.
Mon Tues Wed Thurs Fri Sat Sun
7am
8am
9am
10am
11am
12noon
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12pm
Activity
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TIME - Do I Have The Time
Start by filling in the times you know when you regularly do things such as take the
children to school, do a weekly shop, go to work or attend a class or do a sportsactivity. Then see what time is full and and you will then need to adjust your priorities.Perhaps you will need to see your friends less often or encourage a partner to helpwith the household chores to free up some more time to study. A lot will dependon how much you need and what you want to learn. Obviously the more time youhave to study the more you can achieve.
Evaluation Questions
How did you find this exercise?
Did you find it useful?
Did it help you find extra time for study or not?
What doyou think?
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Time Table - Have A Go
Glasgow Central Edinburgh London Kings Cross
Depart Mon - Fri Depart Mon - Fri Arrive Mon - Fri
0600 09590835 0935 13390930 1030 1453
1230 16511305 1405 1844
1610 20431635 1735 22161800 1900 00042035 2135 0530
Activity 12
Answer the following questions:
1. John needs to be in London by 1400. What train must he catch fromGlasgow?
2. Mary is travelling to London on the train that leaves Edinburgh at 1030.What time will she arrive in London?
3. If Pete arrives in London at 2216, what train did he catch from Glasgow?
4. How long does the train take from Glasgow to Edinburgh?
5. Andrew needs to be at a business meeting in London at 3 oclock. It willtake him 30 minutes to get from the station to the meeting when he arrivesin London. Which is the latest train he can catch from Edinburgh?
Evaluation Questions
Did you find this activity EASY or HARD ?
If you found this task hard, ask your tutor for some exercises on time.
HAVE
A GO
Activity
What do
you think?
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ANSWERS to ACTIVITIES
Answer to Activity 1 - Percentages (page 10)
1. 8.46p
2. 15
3. 4.75
4. 4.50
5. 9.60
6. 37.50
Answer to Activity 2 - Measuring (page 11)
1. 2m
2. 20cm
3a. 30cm
b. 21cm
4. 10
5. 100
6. 380m
7. 140m2
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Answers to Activities continued
Answer to Activity 3 - Shopping (pages 13-14)
1. 1.80
2. 1.79
3. 3.21
4. Est: 1.00 1.20
Cal: 1.04 1.17
Change: 3.96 3.83
5. Est: 2.70
Cal: 2.78
Answer to Activity 4 - Recipes (pages 15-16)
450g self raising flour
80g butter/margarine
300ml milk
3 tablespoons caster sugar
large pinch of salt
Answer to Activity 5 - A Day At The Races (pages 18-19)
1. Fair Lady 25
Lightfoot 15
2. Lightfoot
3. Blackstar
4. 10
5. 33
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Answers to Activities continued
Answer to Activity 6 - Ordering Stationery (page 20)
1. Paper 10.50
2. Blue pens 1.00
3. Black pens 1.00
4. Folders 2.00
5. Envelopes 3.00
6. Total cost 17.50
Answer to Activity 7 - School Outing (page 21)
1. 154.50
2. 54.50
Answer to Activity 8 - Check your Number Power-Part 1 (page 23)
1. 77, 128, 147. 2. 11.00, 4.17, 14.60.
3. 42p, 28, 2.50. 4. 4, 8, 8.
5. 5 6. 15
7. 365cm 8. 15.30
9. 2 litres 10. 1.25m
Answer to Activity 9 - Check your Number Power-Part 2 (pages 24-25)
1. 1 131 2. 683.12 3. 14 835
4. 55.5 5. 3/4
6. 25
7. 10 men 18 women 8. 24m2
9. 100 10. 111/4
11. 18, 54, 42, 40, 35, 21, 48, 24, 40
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Answers to Activities continued
Answer to Activity 10 - Cross-Numbers (page 26)
Across Down
1. 150 1. 152. 45 3. 504. 5 5. 956. 8 8. 147. 55 10. 219. 7 12. 2011. 4012. 21
13. 4
Answer to Activity 11 - Fill in the Calendar (page 28)
The answer to this activity will vary. This will depend on you as an individual.
Answer to Activity 12 - Time Table (page 30)
1. 0835 2. 1453
3. 1635 4. 1 hour
5. 0935