Significant Numbers www mathsrevision com Int 2 Significant
Significant Numbers www. mathsrevision. com Int 2 Significant Numbers Using Standard form
www. mathsrevision. com Starter Int 2
Significant Numbers www. mathsrevision. com Int 2 Learning Intention 1. To understand the 2. term significant numbers for decimals and whole numbers. Success Criteria 1. To know the meaning of significant number. 2. Apply knowledge to problems.
Significant Numbers www. mathsrevision. com Int 2 In mathematics a figure or digit is significant if it gives an idea of both: (i) Quantity (ii) Accuracy IMPORTANT : If zero’s are employed just to position the decimal point then they are considered NOT significant. e. g. 506 cm Has 3 significant figures. 50. 6 cm Has 3 significant figures. 0. 506 cm Has 3 significant figures. 0. 00506 cm Has 3 significant figures.
Significant Numbers www. mathsrevision. com Int 2 IMPORTANT : When dealing with WHOLE NUMBERS you need More information before you can tell if trailing zero’s are significant. Question ? How many significant figures is this number to. 360 Is it 2 or 3 !!! 3 If I said 359 to the nearest ten is 360. How many significant figures. 2 If I said there are 360 deg. in a circle. How many significant figures. YOU NEED TO KNOW THE CONTEXT OF THE QUESTION WHEN DEALING WITH WHOLE NUMBERS WITH TRAILING ZEROS.
Significant Numbers www. mathsrevision. com Int 2 Now try MIA Ex 1 Ch 16 (page 3)
www. mathsrevision. com Starter Int 2
Significant Figures Int 2 www. mathsrevision. com Decimals 0. 001090 To the left of The number Middle of the number To the right of the number Always Significant Not Significant Always Significant Whole Numbers 03060 To the left of The number Not Significant Middle of the number ? Depend More Info. Read Question Always Significant
Significant Numbers www. mathsrevision. com Int 2 Learning Intention 1. Work with calculator to solve problems to specific significant figures. Also convert between standard form and normal mode. Success Criteria 1. Convert between standard form and normal form. 2. Use calculator to work problems to a specific significant figures.
Significant Numbers Int 2 www. mathsrevision. com Standard Form / Scientific Notation Normal mode a >= 1 a < 10 n = Integer Number 4 Sig. fig. 2001 2 Sig. fig. 0. 056 4 Sig. fig. 564. 7
Significant Numbers www. mathsrevision. com Int 2 Now try MIA Ex 2 Ch 1 (page 5)
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