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Lintel Aug 30 - Sep 5 25 questions
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Monday 30 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00018

    Answer: 1.8 × 10-4
  2. 2. Algebra

    Factorise: x² + 4x - 32

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

    Hypotenuse = 35cm, angle = 26°. Find adjacent side

    Answer: 31.5cm
  4. 4. Ratio

    £336.00 is shared between A and B in the ratio 3:5. How much does A receive?

    Answer: £126.00
  5. 5. Statistics

    The mean of 5 numbers is 34. If 4 of them are 32, 40, 39, 31, what is the missing number?

    Answer: 28

Tuesday 31 August 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    830000

    Answer: 8.3 × 105
  2. 2. Algebra

    Factorise: x² - 9x + 18

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

    Adjacent = 22cm, angle = 52°. Find opposite

    Answer: 28.2cm
  4. 4. Ratio

    £280.00 is shared between A and B in the ratio 3:5. How much does A receive?

    Answer: £105.00
  5. 5. Statistics

    Calculate the mean of: 45, 37, 35, 15, 18, 15, 32

    Answer: 28.1

Wednesday 1 September 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    23000

    Answer: 2.3 × 104
  2. 2. Algebra

    Factorise: x² - 4x + 4

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

    Adjacent = 20cm, angle = 59°. Find opposite

    Answer: 33.3cm
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 40. If 4 of them are 47, 23, 27, 39, what is the missing number?

    Answer: 64

Thursday 2 September 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.064

    Answer: 6.4 × 10-2
  2. 2. Algebra

    Factorise: x² - 10x + 21

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

    Hypotenuse = 23cm, angle = 61°. Find adjacent side

    Answer: 11.2cm
  4. 4. Ratio

    £261.00 is shared between A and B in the ratio 4:5. How much does A receive?

    Answer: £116.00
  5. 5. Statistics

    The mean of 6 numbers is 22. If 5 of them are 38, 27, 46, 44, 29, what is the missing number?

    Answer: -52

Friday 3 September 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    74000000

    Answer: 7.4 × 107
  2. 2. Algebra

    Factorise: x² + 2x - 8

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

    Adjacent = 26cm, angle = 45°. Find opposite

    Answer: 26cm
  4. 4. Ratio

    In ratio 2:2:1, what fraction is the second part?

    Answer: 25
  5. 5. Statistics

    Calculate the mean of: 39, 9, 31, 43, 20, 15, 18, 46

    Answer: 27.6