Multiplying by 10 2D Shapes 3D Shapes Multiplying by 100 Rectangle Multiplying by 1000 square Dividing by 10 Dividing by 100 circle Dividing by 1000 octagon e.g. Cone sphere 5.6 x 100 = 560.0 hexagon The Decimal Point Does Not Move! cylinder pyramid Fraction Decimal Percentage 1/2 0.5 pentagon 50% 1/3 0.33 33% 2/3 0.66 66% 1/4 0.25 25% 3/4 0.75 75% 1/5 0.2 20% 1/10 0.1 10% triangle - Subtract take away, minus, fewer, difference between, decrease cube + Add Plus, total, sum, addition, more, altogether, increase cuboid X Multiply Times, lots of, groups of, product, array, repeated addition ÷ Divide Divided by, share, divided into equal groups, share equally 10millimetres (mm) = 1 centimetre (cm), 100 centimetres (cm) = 1 metre (m), 1000 metres (m) = 1 kilometre 1000grams (g) = 1 kilogram (kg), 1000kilograms (kg) = 1 tonne 1000 millilitres (ml) = 1 litre (l), 1 litre (l) = 1000 cm3 Prime numbers are numbers which will divide exactly only by themselves and 1. 1 1/2 1/2 e.g. 2,3,5,7,11,13,17,23 and 29. 1/3 Square number is the total when a number is multiplied by itself. These include 1,4,9,16,25,36,49,64,81 and 100. A Perimeter of a shape is the measurement of all the sides added together. The Area of a 2 D shape is length x width 1/3 1/4 1/4 1/5 1/4 1/5 1/6 The volume of a regular cuboid is length x width x height. 1/3 1/6 1/8 1/5 1/6 1/8 1/4 1/8 1/5 1/6 1/8 1/5 1/6 1/8 1/6 1/8 1/8 1/8 A scalene triangle has no equal length sides. 1/10 An equilateral triangle has 3 equal sides and angles (600). An isosceles triangle has 2 equal sides and angles. 1/12 1/12 1/10 1/10 1/12 1/12 1/10 1/12 1/10 1/12 1/10 1/12 1/10 1/12 1/10 1/12 1/12 1/10 1/12 Angles in a triangle or on a straight line add up to 1800 ________ The angles inside a circle add up to 3600 Acute angles are smaller than 900. Obtuse angles are between 90 and 1800. Reflex angles are between 1800 and 3600. A right angle is 900 A factor is a whole number which will divide exactly into another whole number, e.g. 3 is a factor of 12. Multiples are numbers in a times table. E.g. 3, 39, 63, 129, 642 1/10 1/12

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