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Lintel Dec 14 - 20 25 questions
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Monday 14 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000089 in standard form

    Answer: 8.9 × 10-5
  2. 2. Algebra

    Factorise: x² + 2x - 15

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

    Hypotenuse = 27cm, angle = 38°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.28cm
  4. 4. Ratio

    Divide 136 in the ratio 4:3:1

    Answer: 68, 51 and 17
  5. 5. Statistics

    The mean of 4 numbers is 39. If 3 of them are 24, 44, 32, what is the missing number?

    Answer: 56

Tuesday 15 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 45,000 in standard form

    Answer: 4.5 × 104
  2. 2. Algebra

    Factorise: x² - 12x + 32

    Answer: (x - 4)(x - 8)
  3. 3. Geometry

    Adjacent = 10cm, angle = 43°. Find opposite. Give your answer to 2 decimal places

    Answer: 9.33cm
  4. 4. Ratio

    Divide 260 in the ratio 3:4:3

    Answer: 78, 104 and 78
  5. 5. Statistics

    Calculate the mean of: 9, 43, 6, 5, 29, 48, 27. Give your answer to 2 decimal places

    Answer: 23.86

Wednesday 16 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000043 in standard form

    Answer: 4.3 × 10-5
  2. 2. Algebra

    Factorise: x² + 14x + 48

    Answer: (x + 8)(x + 6)
  3. 3. Geometry

    Hypotenuse = 22cm, angle = 39°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.cm
  4. 4. Ratio

    Divide 85 in the ratio 3:1:1

    Answer: 51, 17 and 17
  5. 5. Statistics

    Calculate the mean of: 16, 11, 17, 22, 44, 15, 41, 45. Give your answer to 2 decimal places

    Answer: 26.38

Thursday 17 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 9,600,000 in standard form

    Answer: 9.6 × 106
  2. 2. Algebra

    Factorise: x² + 2x - 8

    Answer: (x + 4)(x - 2)
  3. 3. Geometry

    Adjacent = 25cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 37.06cm
  4. 4. Ratio

    Orange and purple marbles are in the ratio 2:8. What fraction of the marbles are orange?

    Answer: 1⁄5
  5. 5. Statistics

    The mean of 4 numbers is 30. If 3 of them are 31, 48, 24, what is the missing number?

    Answer: 17

Friday 18 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 810,000,000 in standard form

    Answer: 8.1 × 108
  2. 2. Algebra

    Factorise: x² + 4x - 60

    Answer: (x + 10)(x - 6)
  3. 3. Geometry

    Adjacent = 20cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 29.65cm
  4. 4. Ratio

    Divide 143 in the ratio 3:4:4

    Answer: 39, 52 and 52
  5. 5. Statistics

    The mean of 4 numbers is 39. If 3 of them are 32, 38, 48, what is the missing number?

    Answer: 38