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Lintel Jul 26 - Aug 1 25 questions
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Monday 26 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    68000000

    Answer: 6.8 × 107
  2. 2. Algebra

    Factorise: x² + x - 30

    Answer: (x + 6)(x - 5)
  3. 3. Geometry

    Adjacent = 14cm, angle = 48°. Find opposite

    Answer: 15.5cm
  4. 4. Ratio

    £235.00 is shared between A and B in the ratio 3:2. How much does A receive?

    Answer: £141.00
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 49, 49, 27, 46, what is the missing number?

    Answer: 19

Tuesday 27 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00023

    Answer: 2.3 × 10-4
  2. 2. Algebra

    Factorise: x² - 8x + 15

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

    Hypotenuse = 18cm, angle = 31°. Find adjacent side

    Answer: 15.4cm
  4. 4. Ratio

    Simplify: 12:8:20

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

    Calculate the mean of: 26, 39, 20, 25, 43, 27, 36

    Answer: 30.9

Wednesday 28 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00078

    Answer: 7.8 × 10-4
  2. 2. Algebra

    Factorise: x² - 13x + 42

    Answer: (x - 6)(x - 7)
  3. 3. Geometry

    Hypotenuse = 34cm, angle = 62°. Find adjacent side

    Answer: 16cm
  4. 4. Ratio

    In ratio 1:1:4, what fraction is the second part?

    Answer: 16
  5. 5. Statistics

    Calculate the mean of: 32, 49, 29, 35, 18, 30, 24, 24

    Answer: 30.1

Thursday 29 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    37000000

    Answer: 3.7 × 107
  2. 2. Algebra

    Factorise: x² + 2x - 35

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

    Adjacent = 10cm, angle = 42°. Find opposite

    Answer: 9cm
  4. 4. Ratio

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

    Answer: 25
  5. 5. Statistics

    The mean of 5 numbers is 25. If 4 of them are 15, 50, 50, 36, what is the missing number?

    Answer: -26

Friday 30 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    35000

    Answer: 3.5 × 104
  2. 2. Algebra

    Factorise: x² + 3x - 4

    Answer: (x + 4)(x - 1)
  3. 3. Geometry

    Hypotenuse = 25cm, angle = 54°. Find adjacent side

    Answer: 14.7cm
  4. 4. Ratio

    In ratio 1:1:3, what fraction is the second part?

    Answer: 15
  5. 5. Statistics

    The mean of 5 numbers is 40. If 4 of them are 29, 35, 19, 50, what is the missing number?

    Answer: 67