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Lintel May 23 - 29 25 questions
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Monday 23 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 41,000,000 in standard form

    Answer: 4.1 × 107
  2. 2. Algebra

    Factorise: x² - 2x - 3

    Answer: (x + 1)(x - 3)
  3. 3. Geometry

    Hypotenuse = 26cm, angle = 46°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 18.06cm
  4. 4. Ratio

    Simplify the ratio £8 : 75p

    Answer: 32:3
  5. 5. Statistics

    The mean of 6 numbers is 37. If 5 of them are 39, 47, 17, 24, 48, what is the missing number?

    Answer: 47

Tuesday 24 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 57,000,000 in standard form

    Answer: 5.7 × 107
  2. 2. Algebra

    Factorise: x² + 7x + 6

    Answer: (x + 6)(x + 1)
  3. 3. Geometry

    Hypotenuse = 21cm, angle = 52°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.93cm
  4. 4. Ratio

    Divide 75 in the ratio 1:2:2

    Answer: 15, 30 and 30
  5. 5. Statistics

    Calculate the mean of: 36, 18, 49, 22, 29, 38, 32

    Answer: 32

Wednesday 25 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.006 in standard form

    Answer: 6 × 10-3
  2. 2. Algebra

    Factorise: x² - 7x - 8

    Answer: (x + 1)(x - 8)
  3. 3. Geometry

    Adjacent = 16cm, angle = 58°. Find opposite. Give your answer to 2 decimal places

    Answer: 25.61cm
  4. 4. Ratio

    Simplify: 12:18:18

    Answer: 2:3:3
  5. 5. Statistics

    The mean of 5 numbers is 37. If 4 of them are 41, 37, 15, 31, what is the missing number?

    Answer: 61

Thursday 26 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 400,000 in standard form

    Answer: 4 × 105
  2. 2. Algebra

    Factorise: x² - 6x - 7

    Answer: (x + 1)(x - 7)
  3. 3. Geometry

    Hypotenuse = 31cm, angle = 41°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 23.4cm
  4. 4. Ratio

    Red and blue beads are in the ratio 4:8. What fraction of the beads are red?

    Answer: 1⁄3
  5. 5. Statistics

    The mean of 4 numbers is 26. If 3 of them are 32, 29, 29, what is the missing number?

    Answer: 14

Friday 27 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000088 in standard form

    Answer: 8.8 × 10-5
  2. 2. Algebra

    Factorise: x² + 17x + 60

    Answer: (x + 12)(x + 5)
  3. 3. Geometry

    Adjacent = 14cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 8.75cm
  4. 4. Ratio

    Orange and purple beads are in the ratio 2:5. What fraction of the beads are purple?

    Answer: 5⁄7
  5. 5. Statistics

    Calculate the mean of: 31, 22, 39, 17, 25, 40

    Answer: 29