# lesson 7 exchange rates and conversion graphs. mathswatch 64

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Lesson 7 Exchange Rates and Conversion graphs. Mathswatch 64. 1) Find the median and range of the stem and leaf below. Which of the shapes below are congruent?. GCSE Maths Starter 7. A. B. E. Expand x(x + 3) Evaluate 32.9 x 17 (no calc ) Increase $72 by 15% (no calc ). C. D. - PowerPoint PPT PresentationTRANSCRIPT

Lesson 7 Exchange Rates and Conversion graphs. Mathswatch 64

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64GCSE Maths Starter 7Expand x(x + 3)Evaluate 32.9 x 17 (no calc)Increase $72 by 15% (no calc)

Which of the shapes below are congruent?

1) Find the median and range of the stem and leaf below.

ADBECTo interpret conversion graphs.To calculate the conversion between two types of units.To solve problems involving conversions.EXTN: To establish best value using conversion of units. (Grade C)

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64Why would you convert currency?

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64What is an exchange rate?

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64I know 1 = 43.56 (Thai Baht) what would I do to find how much 100 is?So to convert between and you need to x 43.56X 43.561 = 43.56

Convert the following amounts to Thai Baht.a) 10 b) 50c) 135

100 x 43.56 Baht = 4356 Baht 435.60 Baht2178 Baht5880.60 Baht

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64X 43.56X 43.56X 43.56I know 1 =43.56 (Thai Baht) how would I work out how many pounds, 1000 Baht is?So to convert between and you need to 43.56 43.561 = 43.56

Convert the following amounts to British Pounds (GBP).a) 200 Bahtb) 1400 Bahtc) 70 Baht

1000 Baht 43.56 = 22.95684114= 22.964.5932.141.61

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64 43.56 43.56 43.56New York, USA1 = $1.51 I now take my family to New York. I convert 350 to US Dollars. Calculate how many US dollars I have?

I spend $276 on my visit to New York and return to England. I convert my remaining money to Pounds. Calculate the remaining to GPB ()?

350 x 1.51 = $528.50$528.50 - $276 = 252.50252.50 1.51 = 167.22Sydney, Australia1 = $1.45 I now take my family to Sydney. I convert 1200 to Australian Dollars.Convert 1200 to Aussie Dollars?

I spend $1476 Dollars whilst in Sydney. I convert the remaining currency back to Pounds. How many pounds and pence do I have?

1200 x 1.45 = $1740$1740 - $1476 = $ 264 $264 1.45 = 182.07 In the UK, petrol cost 1.24 per litre. In the USA, petrol cost 3.15 dollars per US gallon.

1 US Gallon = 3.79 Litres1 = $1.51

UK or USA? Show why?

In the UK petrol is 1.24 per litre.1.24 x 1.51 = $1.87 per litre (convert to US dollars)In the US Petrol is $3.15 per gallon3.15 3.79 = $0.83 per litre So we see that petrol is cheaper in the US

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64

EXAMPLES1)2)Use the conversion graph to convert:(a) 70 kg to pounds(b) 120 pounds to kgUse the conversion graph to convert:(a) 30 gallons to litres(b) 400 litres to gallons154 lbs154 pounds54 kg54 kg137 litres88 gallons137 litres88 gallons

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64121)

10cm23cm2in8.75in2.5cmRead off the value for 9in (23cm) and multiply this by 2 (46cm)

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 6413

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64

14To interpret conversion graphs.To calculate the conversion between two types of units.To solve problems involving conversions.EXTN: To establish best value using conversion of units. (Grade C)

Lesson 7 Exchange Rates andConversion graphs.Mathswatch 64