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Lintel Jul 18 - 24 25 questions
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Monday 18 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000039 in standard form

    Answer: 3.9 × 10-5
  2. 2. Algebra

    Factorise: x² + 8x - 20

    Answer: (x + 10)(x - 2)
  3. 3. Geometry

    Hypotenuse = 15cm, angle = 55°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio

    £175.00 is shared between A and B in the ratio 2:5. How much does A receive?

    Answer: £50.00
  5. 5. Statistics

    The mean of 4 numbers is 23. If 3 of them are 19, 18, 35, what is the missing number?

    Answer: 20

Tuesday 19 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 850,000 in standard form

    Answer: 8.5 × 105
  2. 2. Algebra

    Factorise: x² - x - 12

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

    Adjacent = 25cm, angle = 48°. Find opposite. Give your answer to 2 decimal places

    Answer: 27.77cm
  4. 4. Ratio

    Orange, purple and pink counters are in the ratio 4:9:3. What fraction of the counters are purple?

    Answer: 9⁄16
  5. 5. Statistics

    Calculate the mean of: 5, 43, 14, 19, 12, 39, 39. Give your answer to 2 decimal places

    Answer: 24.43

Wednesday 20 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.028 in standard form

    Answer: 2.8 × 10-2
  2. 2. Algebra

    Factorise: x² - 4x - 45

    Answer: (x + 5)(x - 9)
  3. 3. Geometry

    Hypotenuse = 19cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.17cm
  4. 4. Ratio

    Simplify the ratio 4 hours : 35 minutes

    Answer: 48:7
  5. 5. Statistics

    The mean of 4 numbers is 28. If 3 of them are 20, 49, 17, what is the missing number?

    Answer: 26

Thursday 21 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 80,000,000 in standard form

    Answer: 8 × 107
  2. 2. Algebra

    Factorise: x² + 14x + 40

    Answer: (x + 10)(x + 4)
  3. 3. Geometry

    Adjacent = 29cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 18.12cm
  4. 4. Ratio

    Black, white and yellow counters are in the ratio 12:12:1. What fraction of the counters are yellow?

    Answer: 1⁄25
  5. 5. Statistics

    Calculate the mean of: 28, 37, 36, 18, 35, 23, 35. Give your answer to 2 decimal places

    Answer: 30.29

Friday 22 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.074 in standard form

    Answer: 7.4 × 10-2
  2. 2. Algebra

    Factorise: x² + 7x - 30

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

    Hypotenuse = 21cm, angle = 56°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.74cm
  4. 4. Ratio

    £105.00 is shared between A and B in the ratio 2:3. How much does A receive?

    Answer: £42.00
  5. 5. Statistics

    Calculate the mean of: 43, 47, 47, 40, 32, 6, 9

    Answer: 32