# maths

10 men can build a house in 6 months. How long would it take 3 men?

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1. 1 house/60 man months

1 house = (1 house/ 60 man months )* 3 men * x months
60 = 3 x
x = 20 months

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2. find the value of 8(2e-7f)

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3. If there are 10 numbers in a list where is the number that (a)halfway:
(b)a quarter of the way:
(c)three quarters of the way:

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4. Multiply 8 times 2e and 8 times - 7f.

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5. The houses of parliament are 97.5 metres tall. They are drawn using a scale of 1cm=5m. How tall is the picture?

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7. 16e-56f

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8. 16e-56f - correct

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9. 18 3x6 month equal 18

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