Maths 0.0 / 5 OthermathsOtherOther Created by: VanisaCreated on: 09-05-15 15:56 Prime Numbers - Prime number is divisible by: itself and 1 - 1 is not a prime number: here are some prime numbers: 7, 11 and 23 1 of 8 Fractions Mixed number to improper fraction: 1) 3 4/5 = 3+4/5 2) 4 6/7 = 4+6/7 =15/5 + 4/5 =28/7 + 6/7 =19/5 =34/7 Improper fraction to mixed number: 1) 29/8 = 3 5/8 2) 26/6 = 4 2/6 = 4 1/3 2 of 8 Fractions Addding fractions: 1) 3/11 + 7/11 = 10/11 2) 9/20 + 3/10 = 9/20+ 6/20 = 15/20 = 3/4 Subtracting fractions: 1) 7/9 - 5/9 = 2/9 2) 3/4 - 1/2 = 1/4 3 of 8 Fractions Multiplying fractions: 1) 1/3 of 2/5 = 1/3 * 2/5 2) 7 1/2 * 4/5 = 2/15 15/2 * 4/5 = 6/1 = 6 Dividing fractions: 1) 5/6 ÷ 11/30 = 5/6 * 30/11 2) 4 ÷ 1/3 = 12 = 25/11 = 2 3/11 4 of 8 Area and Perimeter REMEMBER : AREA OF A TRIANGLE = 1/2 ( b*h) Composite shape: - a composite shape is made up of 2 or more shapes. - should b edivided into rectangles or triangles. - then both of the areas should be added together. 5 of 8 Negative numbers - useful to think of temperature when dealing with negative numbers. - when 2 signs are placed together they should be replaced by one sign. ++ = + if signs are the same replace with "+" - - = + + - = - if signs are different replace with "-" - + = - 6 of 8 Angles 7 of 8 Angles REMEMBER: - ANGLES on a STRAIGHT LINE ADD UP TO 180* - ANGLES on a POINT ADD UP TO 360* - ANGLES in a TRIANGLE ADD UP TO 180* - ANGLES in a QUADRILATERAL 360* - VERTICALLY OPPOSITE ANGLES ARE EQUAL 8 of 8

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