S4_Foundation_Proportion_MIA

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Unformatted text preview: term scale and how they are used in real life. 13 Feb 2012 Created by Mr. Lafferty Maths Dept. Scales and Models S4 www.mathsrevision.com Definition A scale of This simply means for every 1cm measured on a drawing this represents 2m in reallife. 13 Feb 2012 Created by Mr. Lafferty Maths Dept. 1 cm = 2m Scales and Models S4 4cm www.mathsrevision.com 4x25= 100cm 2cm 2x25 = 50cm The scale of this drawing is 1cm = 25cm What is the actual length and breadth of the TV ? 13 Feb 2012 Created by Mr. Lafferty Maths Dept. Scales and Models S4 12cm www.mathsrevision.com 12x50 = 600cm = 6m Living room 8cm 8x50 = 400cm =4m The scale of this drawing living room is 1cm = 50cm What is the actual length and breadth of the room ? 13 Feb 2012 Created by Mr. Lafferty Maths Dept. Scales and Models S4 www.mathsrevision.com Now try Ex 7.1 Ch 2 (page 31) Monday, February 13, 2012 Created by Mr. Lafferty @www.mathsrevision.com 44 Starter Questions S4 1. 13. 6 + 7. 9 www.mathsrevision.com 2 . C a lc ula t e 2 0 % o f 6 4 3. W hat is t he best buy 3 cans of beans f or 57p or 4 cans 72p Explain your answer . 13 Feb 2012 Created by Mr. Lafferty Maths Dept. Scales and Models S4 Learning Intention Success Criteria 1. To be able to calculate the scale of a model. www.mathsrevision.com 1. To explain how to calculate the scale of a model. 13 Feb 2012 Created by Mr. Lafferty Maths Dept. Scales and Models S4 Example : www.mathsrevision.com A model bicycle is 30cm long. The real length of the bicycle is 150cm. What is the scale of the model. Answer : 150 30 = 5 Scale is 1 to 5 Monday, February 13, 2012 Created by Mr. Lafferty @www.ma...
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This note was uploaded on 02/13/2012 for the course MATH 115 115 taught by Professor Jones during the Spring '10 term at University of Phoenix.

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