BRAHMAM BODHI

SUMMER HOLIDAY HOMEWORK

MAY ‐ JUNE 2016

GRADE ‐ IGCSE 1

BRAHMAM BODHI

Summer Holiday Homework 2016-17 (IGCSE 1)

Science

Learn Dalton’s Atomic Theory.

Learn Rutherford’s Atomic Theory.

Learn the names of rst 20 elements with their electronic congurations.

Learn monovalent, divalent and trivalent Cations and Anions.

English

1. Prepare a report on the areas of work of UN GENERAL COUNCIL. The different councils,headquarters etc

2. Collect the news based on antithesis elements of UN General Councils' projects in variouscountries.

3. Read and revíew the news from International newspapers like The Newyork Times, The Herald,The Reuters News etc.

4. A presentation based on your knowledge about various councils of UN should be made.

Business Study

CS1)

Audi now has a global reputation for comfort and quality. Its range of cars can cost up to $500 000 and is only targeted at the richest customers. Its products include the Audi R8 and Audi RS, two very exclusive cars with only a few thousand of each being made.

1. What is meant by the term scarcity? (2)

2. Explain the opportunity costs to Audi of producing the R8 and RS cars. (4)

3. Explain how specialisation benets an employee of Audi. (4)

4. Do you believe that specialisation will benet Audi when making their cars? Justify your answer. (6)

CS2)

Using your own country or one you have chosen, nd out how the employment structure in the primary, secondary and tertiary sectors has changed in that country over the past 10 years. You should then write a short statement, of no more than 100 words, which explains why your chosen country has that particular balance of primary, secondary and tertiary sectors. This statement should make it very clear so that others can fully understand. Be ready to read your statement to the class. You may have to convince some of your classmates, so really emphasize the key points.

1. Why does the number of people in each sector change?

2. What does this mean for the economy of the country?

CS3)

Identify two businesses in your country. One should be from the public sector and the other from the private sector. How do the aims and objectives of these two businesses differ? Write these down in two columns – one for similarities and one for differences.

Then carry out research into a social enterprise in your area. What does this business do? How do its aims and objectives differ from those of large private enterprises?

CS4)

Savages are a leading clothing brand which sells mainly in its own country. However, it is looking to expand into new markets. To do this, Ali, its owner, wants the business to become a public limited company (PLC). Ali is keen to expand the business while maintaining the excellent reputation he has created with his management skills, high-quality products and happy staff.

1. Explain why Ali is operating in the private sector. (4)

2. Identify two differences between the public and private sector. (2)

3. Identify and explain two benets of Ali’s business becoming a PLC. (4)

4. Explain why a government may nationalise an industry or business. (4)

CS5)

Fill in the Gaps:

__________ are important because they are used to make goods, like television, cars & houses and to provide _________ like banking, insurance and transport. All of these resources are ________. Any resources that are not scarce are called ________. Wants are ________ but the resources used to produce the goods and services to satisfy these wants are _________. That is, there is ________.

__________ is necessary because scarce resources can be used in lots of ways to make different goods and services. The real cost of choosing one thing and not another is known as the __________________.

CS6)

The AR.C Company produces and sells cosmetics for women and girls. The company is owned by a brother and sister. They wanted to make more m0ney than they were earning in their old jobs. Although protable, business sales have fallen in recent years. This is causing many stakeholder groups to worry about the future of the business. The owners are very keen for the business to continue. Sales are falling due to new competition in the market with exciting new products, so ARC must cut production costs to survive. The company has bought expensive new 111anufacturing equipment which is much specialized.

Fewer workers are needed and they perform the same tasks each day and some workers have left because they are bored. Production has fallen as a result of this and ARC cannot supply all of the shops.

The marketing director is keen to increase the value added of the cosmetics. One product - the 'Bella' perfume - currently sells for $7. It is made from soap bought in by the business at a cost of $2 per item.

The director believes that by designing new luxury packaging for the product, value added could be increased.

1. How do the business's objectives seem to have changed recently?

2. Explain the advantages and disadvantages of using division of labour for this business

3. Assume that the marketing director bought in new packaging for the Bella J Perfume. This costs anextra $1 per unit. She increases the selling price by 20%. Calculate the new value added of this product.

4. Evaluate anyone alternative method that the marketing director could use to increase the valueadded of this product.

CS7)

A new plastics factory is to be built in your country. It will employ many workers and will export some of its output to other countries. It will be built on farmland several kilometers away from the main city.

Other plastics businesses are worried about the competition it will bring. It could lead to lower prices for plastic products. Local residents have mixed feelings about the plan. The factory will

usespecialized equipment to allow for division of labour.

1. Identify four stakeholder groups that will be affected by the plan to build this new factory. [4 marks]

2. Discuss how two of these groups might be affected by the new factory. [8 marks]

3. Assess the effect on workers of using division of labour in the new factory. [8 marks]

CS8)

The main airline in Country X, Airco, is owned and managed by the central government.

1. The government decides to privatize this airline. Explain what this means.

2. Which sector of industry is this business in? Justify your answer

3. Briey analyse one argument for and one against the privatization.

CS9)

Explain the benets of job specialization to a clothing manufacturer.

CS10)

Unglert’s Bakery Ltd. produces bread and cakes for sale in its 20 shops located across Southern Germany. The bakery needs goods and services from the primary, secondary and tertiary sectors to make the bread and cakes and to sell the goods to customers.

1. Explain what is meant by the interdependence of primary, secondary and tertiary sectors by usingtwo examples from following table. (4 marks)

2. Give two examples of businesses in the primary sector that Unglert’s Bakery Ltd. might trade with.

(2 marks)

3. Give two examples of businesses in the tertiary sector that Unglert’s Bakery Ltd. might trade with.

(4 marks)

Economics

Visit a bank and and nd out about -

The basic banking operations such as procedure for depositing and withdrawing money,

cheque draft etc.

What are debit cards and credit cards?

What is a pass book?

What are bank account statements?

Brief idea about different types of loans (secured and unsecured loans)

Difference between general working conditions of public sector banks and private banks.

Various types of accounts.

Various banking instruments.

Foreign currency accounts and transactions.

Write one paragraph on each of the above mentioned topics.

You may use internet, books and other third party resources.

MEP Practice Book SA6

1

6 7

0.5 0.6

10

10.610.5

3.33.2

4.84.7

1. Write each of the following as a decimal.

(a)7

10(b)

27100

(c)2

10(d)

4011000

(e)15

100(f)

151000

(g)43

100(h)

9991000

2. Write each of the following as a fraction.

(a) 0.6 (b) 0.37 (c) 0.07 (d) 0.219

(e) 0.001 (f) 0.999 (g) 0.093 (h) 0.55

3. Read the value indicated by each pointer

(a) (b)

(c) (d)

(e) (f)

4. Copy each scale three times and indicate with a pointer each of the numbers given.

(a) (b)

(i) 4.52 (i) 0.75

(ii) 4.57 (ii) 0.79

(iii) 4.555 (iii) 0.705

5. Calculate

(a) 4 2 3 1. .− (b) 5 6 2 7. .+ (c) 7 4 9 7. .+

(d) 21 3 32 4. .+ (e) 46 5 21 6. .+ (f) 39 8 38 9. .+

(g) 27 3 62 4 10 3. . .+ + (h) 4 2 3 1. .− (i) 5 6 2 4. .−

(j) 9 2 7 4. .− (k) 8 3 2 5. .− (l) 25 6 12 2. .−

(m) 47 7 24 5. .− (n) 86 4 37 5. .− (o) 73 2 45 6. .−

(p) 5 22 3 45. .+ (q) 3 65 4 17. .+ (r) 4 37 2 75. .+

(s) 21 42 37 23. .+ (t) 74 56 19 58. .+

4.5 4.6 0.7 0.8

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6. (a) Convert the following amounts in pence to £s.

(i) 57 p (ii) 214 p (iii) 7002 p (iv) 47631 p

(b) Convert the following amounts in £s to pence.

(i) £2.99 (ii) £0.07 (iii) £521 (iv) £345.27

7. Find a decimal number between

(a) 4.5 and 4.6 (b) 0.49 and 0.50 (c) 12.2 and 12.3

(d) 75.37 and 75.38

8. Put these decimal numbers in ascending order.

1.47, 1.4, 1.7, 1.471, 1.444, 1.4747

9. Felix has 8.5 m of model railway track and Gerry has 6.6 m.

(a) What is the total length of their track?

(b) They sell 4.7 m of the total length of their track. What length of track is left?

10. The Robinson family (2 adults and 2 children) are members of Parkmead LeisureCentre.

SWIMMING PRICES

Members Non-Members

Adults £1.50 £2.00

Children £1.20 £1.50

(a) How much in total do the Robinson family have to pay for a swim?

(b) How much less do the Robinson family pay as members for a swim, thanthey would if they were non-members?

(c) A family ticket for membership costs £25.

What is the minimum number of times that the Robinson family would haveto go swimming if they were to save money on their family ticket?

11. Fatima is making a shelf unit as shown.

She needs three pieces of wood, each oflength 1.4 m, for the shelves.

She needs two pieces of wood, each oflength 0.9 m, for the ends.

The wood is sold only in 3 m lengths.

Calculate how many 3 m lengths Fatima needs to buy.

1.4 m

0.9 m

3

12. A sports shop keeps information about sports shoes on a database.Part of this database is shown below.

Model Manufacturer Cost

Flyer Tiger £39.99

Racer Cheetah £37.29

Runner Cheetah £35.99

Strider Tiger £48.99

Blinder Lion £33.49

Sprinter Leopard £49.99

(a) Write down the name of the manufacturer of the cheapest shoe.

(b) How much dearer is the Strider than the Racer?

13. Six girls competed in the long jump at their school Sports Day. Their best jumpswere as follows.

Anne 6.08 m Donna 6.12 m

Beth 5.93 m Emma 5.98 m

Candy 5.87 m Fatima 5.98 m

(a) Fatima finished in second place.Write down a possible length for Fatima's jump.

(b) Arrange the six competitors in order of merit.

(c) Write down the length of Anne's jump in centimetres.

14. 39 members of Arwick Youth Club went on an outing to a leisure centre.They went in minibuses which could seat up to 15 members.

(a) (i) How many minibuses were needed?

(ii) How many spare seats were there?

The transport costs were £90 altogether. They also had to pay £150 for the groupto use the leisure centre.

(b) Jo collected £6.50 from each passenger to pay for this.How much was left over?

4

15.

(a) (i) Arnie orders a burger and fries. How much does this cost?

(ii) He pays with a £5 note. How much change does he get?

(b) A 'Meal Deal' gives a burger, fries and drink for £2.50.

How much cheaper is this than buying the items separately?

1. Without using a calculator, find

(a) 2 5 10. ÷ (b) 4 57 100. × (c) 2 13 10. ×

(d) 9 5 1000. × (e) 15 241 100. × (f) 0 57 10. ×

(g) 92 100× (h) 7 93 1000. × (i) 2 114 100. ×

(j) 0 221 100. × (k) 0 0049 1000. × (l) 0 078 100. ×

2. Without using a calculator, find

(a) 2 47 10. ÷ (b) 22 5 10. ÷ (c) 476 9 100. ÷

(d) 0 01 10. ÷ (e) 100 2 100. ÷ (f) 99 100÷

(g) 526 4 100. ÷ (h) 9748 1000÷ (i) 9748 100÷

(j) 27 49 100. ÷ (k) 0 109 100. ÷ (l) 4000 10 000÷

3. The Williamson family went into a café. The table shows what they ordered.

Cost

£ . p

Three cans of cola at 63 pence each 1 . 89

Two cups of tea at 54 pence each

Five buns at 32 pence each

Total cost

(a) Copy and complete the table.

Mr. Williamson paid the bill with a £10 note.

(b) How much change did he get?

62 p

Drink

99 p

Fries

£1.35

Burger

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4.

These notices were seen on two market stalls.

At which stall was the price of one orange cheaper and by how much?

5. Fencing rails are 3.9 metres long.

How many rails are needed for a fence 200 metres long?

6. Tom earns a basic weekly wage of £180 for 36 hours work.

(a) How much does Tom earn for one hour at the basic rate?

(b) Overtime pay is one and a half times the basic rate.

How much is Tom paid for one hour of overtime?

(c) Overtime is paid for each hour over the basic 36 hours.

How much does Tom earn if he works 43 hours in one week?

7. Jane's classroom is rectangular.

She measures the length and width of the floor.

The length is 6.73 m. The width is 5.62 m.

(a) Calculate the area of the classroom floor.

Write down all the figures in the answer shown on your calculator.

(b) (i) The classroom is to be carpeted.

Give your answer to part (a) to an appropriate degree of accuracy.

(ii) Explain why you chose this degree of accuracy.

1. Write each of the following correct to 1 decimal place.

(a) 3.14 (b) 5.67 (c) 385.28 (d) 9.942

(e) 8.01 (f) 145.97 (g) 0.521 (h) 0.062

ORANGES15 for £1.20

ORANGES

10 for £1

3.9 m

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2. Write each of the following correct to 2 decimal places.

(a) 0.089 (b) 6.315 (c) 0.802 (d) 12.989

(e) 4.999 (f) 0.007 (g) 1.002 (h) 52.436

3. Write all the numbers in Question 1, correct to

(i) 2 significant figures (ii) 1 significant figure.

4. Write each of the following as exact decimal equivalents.

(a)38

(b)14

(c)45

(d)78

(e)15

(f)34

(g)18

(h)58

5. Write each of the following as decimals, correct to 3 decimal places.

(a)23

(b)16

(c)27

(d)1

11

(e)29

(f)13

(g)56

(h)17

6. Copy and complete the table below, putting on the equivalent fractions, decimalsand percentages.

Proportion Fraction Decimal Percentage

one tenth1

10

25%

0.3

three eighths

1

2

0.625

three quarters

4

5

7

1. Without using a calculator, find

(a) 21 17× (b) 32 14× (c) 26 33×

(d) 31 104× (e) 47 25× (f) 72 214×

(g) 17 1147× (h) 312 274× (i) 45 940×

2. Without using a calculator, find

(a) 504 4÷ (b) 120 20÷ (c) 1008 8÷

(d) 414 23÷ (e) 496 32÷ (f) 756 21÷

(g) 7525 35÷ (h) 1323 49÷ (i) 24849 99÷

3. A Maths teacher buys 92 text books, costing £3.85 each.

Without using a calculator, work out the exact total cost.

4. A group of 24 teachers wins £2.7 milion on the National Lottery.

Without using a calculator, find out how much each gets in £s if the money isshared equally.

5. 17 tickets cost £21.25. If they all cost the same, find, without using a calculator,the cost of one ticket.

6. The cost of a calculator is £6.79.

(a) Work out the cost of 28 of these calculators.

A college wants to buy 570 calculators. They are sold in boxes of 50.

(b) Work out the number of boxes the college should buy.

The college decides to increase its order of calculators by 10%.

(c) Increase 570 by 10%.

7. Watcham has a population of 86 000 in an area of 104 square miles.

To meet housing targets, it needs to aim to house an extra 14 000 people whilstincreasing the area by only 6 square miles.

If this happens, by how much will the population density have increased?

1. Express each of the following correct to 3 significant figures:

(a) 96.63 (b) 316.5 (c) 1.940 5

(d) 0.004 681 (e) 50.92 (f) 0.000 604 8

(g) 0.040 713 (h) 5.984 (i) 26.98

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2. Write each of the following correct to the number of significant figures (s.f.)indicated.

(a) 308.637 (4 s.f.) (b) 0.099 8 (1 s.f.)

(c) 420.65 (3 s.f.) (d) 0.004 307 (2 s.f.)

3. Write 13.004 72 correct to

(a) 5 s.f. (b) 4 s.f. (c) 2 s.f.

4. Nigel, Ali and Sue were given ten calculations to do.

The following table shows their answers. For each calculation, only one of thethree obtained the correct answer. By working out an estimate for each question,decide who was correct in each calculation.

Question Nigel's answer Ali's answer Sue's answer

(a) 1.02 × 2.9 12.928 2.958 6.438

(b) 0.99 × 46.7 46.233 32.136 25.633

(c) 4.8 × 10.4 26.32 49.92 89.42

(d) 33.264 ÷ 13.2 8.42 12.62 2.52

(e) 35.244 ÷ 8.01 4.4 1.4 12.4

(f) 7.1 × 7.1 50.41 5.41 36.01

(g) 27.028 ÷ 4.66 2.68 11.08 5.8

(h) 76.16 ÷ 47.6 1.6 8.6 12.2

(i) 12.7 × 8.5 50.85 107.95 204.75

(j) 8.342 ÷ 0.97 2.7 16.16 8.6

5. Without finding an exact answer:

(a) which of the following is nearest in value to 6 96 7 21 7 1 6 82. . . .+ + + ?

21.7, 28.09, 90.73 or 21.826

(b) which of the following is nearest in value to 3 14 300 34 3. .× − ?

57, 87, 870 or 570

(c) which of the following is nearest in value to 9 7 10 14× + × ?

148, 67, 14.8 or 6.7

6. Estimate, correct to 1 significant figure, the value of 2 01 29 2. .× .

9

7. Express each number correct to 1 significant figure and work out an estimateto

19 7 9 7512 4

. ..

×.

Use your calculator to evaluate 19 7 9 75

12 4. .

.×

correct to 2 significant figures.

8. (a) Bottles of mineral water cost 39 p each. Estimate the cost of 142 bottles.Show how you obtained your estimate.

(b) Without using a calculator, work out the exact cost of 142 bottles of mineralwater at 39 p each.

9. Charlie has to work out 5 2 3 9 2 1. . .× × . He uses a calculator and gets 425.88 forhis answer.

Saeeda works out an approximate answer for the question. She knows thatCharlie's answer must be wrong.

(a) (i) Write down approximate values for 5.2, 3.9 and 2.1.

(ii) Use these approximations to find a rough answer to Charlie'scalculation.

(b) What is the mistake in Charlie's answer?

10. The rectangular glass tank shown in the diagram contains 1 litre (1000 cm3 ofwater.

Not to scale

Sanjay wanted to find the depth (d cm) of the water.

He multiplied 11.63 by 9.21 on his calculator and wrote down the answer.

He then divided 1000 by this answer.

(a) Explain how you could use your calculator to find the depth withoutwriting down the answer to 11 63 9 21. .× .

(b) Work out the depth of the water, and write down all the figures on yourcalculator display.

d cm

11.63 cm 9.21 cm

10

11. Estimate the answer to the following.

83 4 39 725 8 10 1

. .

. .+×

12. (a) Work out the value of 2 3.

(b) Work out 6 15 4 15× + × .

(c) Use approximations to estimate the value of37 48 6 13

1 95 2

. .

.

×( )

You must show your working.

1. Use a calculator to evaluate each of the following:

(a) 480 96 15− + (b) 4 059 1353 11÷ ×

(c) 533 118 227+ − (d) 251 696 15+( ) ×

(e) 1283 694 12 19−( ) ÷ +( ) (f) 241 270 121 129 112× −( ) ÷ +( )(g) 77175 17 18 78 57÷ +( ) × −( )[ ](h) 33350 290 115 798 869 70÷ ×( ) +[ ] ÷ −( )

2. For each of the following expressions,

(a) evaluate, giving your answer correct to 2 decimal places;

(b) express each number correct to the nearest whole number and give anestimate to check your calculations.

(i) 4 6 3 9 2 2. . .+ × (ii) 4 6 3 9 2 2. . .+( ) ×

(iii) 3 3 25 0 6125. .× × (iv) 4 2 0 8 1 6 1 2. . . .× − ×

(v)1 1 12

1 8 3 12

.

. .

××

(vi) 9 4 3 6 1 92. . .+( ) ÷

3. (a) Use your calculator to work out the value of

6 08 9 72581 237

2. .× ( )+

Write down the full calculator display.

(b) (i) Write down a calculation that could be done mentally to check theanswer to part (a) using numbers rounded to one significant figure.

(ii) Write down the answer to your calculation in part (b) (i).

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4. Work out:

(a) 0 6 2 5. .× (b)78 14

112 86

×−

(c) 7 52 2− .

5. Gabriel buys a packet of 18 biscuits. The packet weighs 285 g.

(a) Gabriel wants to calculate the weight of one of these biscuits.He presses the following buttons on his calculator.

1 8 ÷ 2 8 5 =

Explain what is wrong with his calculation.

(b) Calculate the weight of one of these biscuits. Give your answer to thenearest gram.

(c) Gabriel checks his answer without using a calculator.

Show how you can use approximation to check that his answer is of the rightorder. You must show all your working.

6. Use your calculator to work out:

95 4 18 9

35 2 17 3

. .

. – .

+

(a) Write down your full calculator display.

(b) Give your answer to 2 significant figures.

7. Calculate the following.

(a) 57 76. (b) 4 24. (c)3 9 0 65

0 013. – .

.

(d)3 9 0 533 9 0 53

2. .. .

+×

Give your answer to the nearest integer.

1. Write down the upper and lower bounds for each of the following measurements.

(a) 56 g (b) 43.0 litres (c) 2.35 metres

(d) 5.6 km (e) 17.8 metres (f) 8.54 kg

(g) 17.2 seconds (h) 0.5 mm (i) 1.9 cm

2. Find the upper and lower bounds for each of the calculations shown below,assuming the dimensions given are subject to rounding errors.

(a) The perimeter of a rectangle 65 cm by 84 cm.

(b) The area of a rectangle 65 cm by 84 cm.

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(c) The perimeter of an octagon of side 42 mm.

(d) The volume of a cube of edge length 96 mm.

(e) The total weight of 54 objects, each weighing 2.62 kg.

3. (a) Angela measures the lengths of some sticks to the nearest centimetre.She arranges them in groups.

The length of the sticks in the shortest group is 14 cm, to the nearestcentimetre.

(i) What is the smallest possible length for a stick in this group?

(ii) What is the smallest possible length for a stick which is not in thisgroup?

(b) Angela measures the lengths of some other sticks. She records the length ofone of these sticks as 52.2 cm, to the nearest tenth of a centimetre.

What is the smallest possible length of this stick?

4. Sections of a railway line are measured to the nearest metre as either 200 m or 80 m.

What are the bounds on the total length of 15 sections, consisting of eight 200 msections and seven 80 m sections?

5. The area of a rectangle is 54.4 square centimetres, correct to 1 decimal place.The length of this rectangle is 8.3 centimetres, correct to 1 decimal place.

(a) From this information, write down

(i) the largest value (ii) the smallest value

that the length of the rectangle could have.

(b) Use your answers in (a) to calculate the largest possible width of therectangle.

6. The formula SF

A= is used in engineering.

F = 819 , correct to 3 significant figures

A = 2 93. , correct to 3 significant figures.

(a) For the value of F, write down

(i) the upper bound (ii) the lower bound.

(b) For the value of A, write down

(i) the upper bound (ii) the lower bound.

(c) Calculate

(i) the upper bound (ii) the lower bound

for the value of S for these values of F and A. Write down all the figures onyour calculator display.

(d) Write down this value of S correct to an appropriate number of significantfigures.

13

7. Cases each weigh 20 kg to the nearest kilogram. What is the least that six casescould weigh?

8. I wish to paint the outside walls of my house. A tin of paint covers 25 m 2 , correct

to the nearest 5 m 2 . The outside walls of my house have an area of 320 m 2 ,

correct to the nearest 10 m 2 .

Calculate the maximum number of tins of paint that I may have to buy.

9. The time period T of a simple pendulum of length l is given by the formula

Tl

g= 2π

where g is the acceleration due to gravity.

The length of a simple pendulum is given as 30 cm, correct to 2 significant figures.The value of g is given as 9.8, correct to 2 significant figures.

Calculate the greatest value of T.

Give your answer correct to 3 significant figures.

10. A circle has an area of 100 cm2 , measured to the nearest square centimetre.

What is the lower bound of the radius?

ICT

Today’s technological era is directly or indirectly driven by computers. And hence, it is very

important for every individual to have a decent typing speed. We too want you all to equip

yourself with good typing speed.

Please download a very good free of cost typing software from the given link:

http://www.kiranreddys.com/download/

Practice typing every day for at least 15-20 minutes using inbuilt tutorial and do not forget to

appear for tests as well.

A typing competition will be conduct after the summer break.