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Numbers – Square, Cube Numbers and their Roots
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Square numbers – the result of multiplying an integer (whole number) by itself . e.g 25 is a square number because it’s the result of 5 x 5 . This is written as 52 → five squared or five to the power of two (5²) . Negative numbers can also be squared because when multiplying two negative […]
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Numbers – Ratio
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Ratio – how much of one thing there is compared to another . e.g if you have 5 squares, 3 red and 2 blue, the ratio of red squares to blue squares is 3:2 Example: Out of 500 people, 320 have a flu. Q1) How many people should be expected to have the flu out […]
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Numbers – Speed, Distance and Time
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Speed, Distance and Time: Speed . Rate of change of distance . Measured in mph – miles per hour, km/h – kilometres per hour and m/s – metres per second . Distance measured in km – kilometres and m – metres . Time measured in hour and seconds Formula: To find a quantity, cover the […]
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Numbers – Factors, Multiples and Prime Numbers
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Factors, Multiples and Prime Numbers: Multiples – products of a multiplication table . e.g 20 is a multiple of 5, because it is a product of 5 x 4, as well as 4 Example: Q) Find the lowest common multiple of 5 and 7 Write out the multiples of 5 and 7 Find the smallest […]
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Numbers – Fractions
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Fractions . A quantity that tells us how many parts of a whole we have e.g 2/6 tells us we have 2 out of the 6 parts . Fractions consist of two numbers separated by a slash → top number being the numerator and bottom number being the denominator Fractions to decimals: Change the fraction to […]
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Numbers – Decimals
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Numbers Decimals, Fractions and Percentages: What are decimals? A type of number with a point e.g 3.3, 20.5, 300.43 Each unit after the decimal point has its own classification e.g. tenths, hundredths, thousandths and so on. Multiplying Decimals: First, remove the decimal point as if you are multiplying whole numbers. Count the number of digits that […]
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