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Lintel Feb 11 - 17 25 questions
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Monday 11 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000025 in standard form

    Answer: 2.5 × 10-5
  2. 2. Algebra

    Factorise: x² + 2x - 35

    Answer: (x + 7)(x - 5)
  3. 3. Geometry

    Adjacent = 22cm, angle = 53°. Find opposite. Give your answer to 2 decimal places

    Answer: 29.19cm
  4. 4. Ratio

    Simplify the ratio 2m : 85cm

    Answer: 40:17
  5. 5. Statistics

    The mean of 4 numbers is 36. If 3 of them are 50, 28, 43, what is the missing number?

    Answer: 23

Tuesday 12 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 9,100,000 in standard form

    Answer: 9.1 × 106
  2. 2. Algebra

    Factorise: x² + 2x - 80

    Answer: (x + 10)(x - 8)
  3. 3. Geometry

    Hypotenuse = 17cm, angle = 49°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.15cm
  4. 4. Ratio

    Orange, purple and pink sweets are in the ratio 5:5:6. What fraction of the sweets are purple?

    Answer: 5⁄16
  5. 5. Statistics

    The mean of 5 numbers is 28. If 4 of them are 39, 32, 36, 22, what is the missing number?

    Answer: 11

Wednesday 13 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.089 in standard form

    Answer: 8.9 × 10-2
  2. 2. Algebra

    Factorise: x² + 14x + 33

    Answer: (x + 11)(x + 3)
  3. 3. Geometry

    Adjacent = 10cm, angle = 55°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.28cm
  4. 4. Ratio

    £145.00 is shared between A and B in the ratio 2:3. How much does A receive?

    Answer: £58.00
  5. 5. Statistics

    Calculate the mean of: 31, 47, 33, 47, 19, 40, 45. Give your answer to 2 decimal places

    Answer: 37.43

Thursday 14 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000027 in standard form

    Answer: 2.7 × 10-5
  2. 2. Algebra

    Factorise: x² - x - 12

    Answer: (x + 3)(x - 4)
  3. 3. Geometry

    Adjacent = 28cm, angle = 58°. Find opposite. Give your answer to 2 decimal places

    Answer: 44.81cm
  4. 4. Ratio

    Simplify: 18:18:15

    Answer: 6:6:5
  5. 5. Statistics

    The mean of 4 numbers is 38. If 3 of them are 16, 34, 41, what is the missing number?

    Answer: 61

Friday 15 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 26,000,000 in standard form

    Answer: 2.6 × 107
  2. 2. Algebra

    Factorise: x² + 5x - 36

    Answer: (x + 9)(x - 4)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 59°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.94cm
  4. 4. Ratio

    Express the first part of 10:13 as a fraction in simplest form

    Answer: 10⁄23
  5. 5. Statistics

    Calculate the mean of: 34, 5, 13, 28, 15, 26, 25. Give your answer to 2 decimal places

    Answer: 20.86