2684612
Descripción
Test por Andrea Leyden, actualizado hace más de 1 año
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Creado por Andrea Leyden
hace casi 9 años
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Pregunta 1
Pregunta
5\(x \) - 2 = \(x \) + 16
Respuesta
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4.5
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3.5
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2.3
Pregunta 2
Pregunta
125 = \(a\) + \(b\). \(a\) and \(b\) are square numbers. Find two possible pairs of values for \(a\) and \(b\).
Respuesta
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\(a\) = 10, \(b\) = 125 and \(a\) = 20, \(b\) = 150
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\(a\) = 4, \(b\) = 121 and \(a\) = 25, \(b\) = 100
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\(a\) = 1, \(b\) = 101 and \(a\) = 5, \(b\) = 50
Pregunta 3
Pregunta
Multiply out and simplify 10(2\(x \) – 1) – 20\(x \)
Respuesta
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20\(x \)
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-10\(x \) - 10
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-10
Pregunta 4
Pregunta
A company receives 1250 orders in December. It has a January sale. It receives 1430 orders in January. Work out the percentage increase in orders.
Respuesta
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14.4%
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1.44%
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12.58%
Pregunta 5
Pregunta
Use approximations to estimate the value of \(\frac{402.5}{2.19 x 38.7}\)
Respuesta
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6
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4
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5
Pregunta 6
Pregunta
Expand \(w\)(\(w\) + 6)
Respuesta
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\(w^2\) + 6\(w\)
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6\(w^2\) + \(w\)
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\(w\) = 6
Pregunta 7
Pregunta
Factorise fully 8\(y\) + 20
Respuesta
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\(y\)(8 + 20)
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\(y\) = 2.5
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4(2\(y\) + 5)
Pregunta 8
Pregunta
Post and packing on a parcel is £8.00 for delivery in the UK. This increases by 40% if the parcel is sent to the USA. Work out the cost to send the parcel to the USA.
Respuesta
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£3.20
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£11.20
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£4.80
Pregunta 9
Pregunta
Write 126 as a product of prime factors.
Respuesta
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3 x 2 x 2 x 5
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1 x 126
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2 x 3 x 3 x 7
Pregunta 10
Pregunta
Alice has £4. Billie has twice as much as Alice. Billie has two-thirds of the amount Chris has. The amount Chris has is four-fifths of his age in years. How old is Chris?
Respuesta
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11
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12
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15
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