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Lintel Jun 28 - Jul 4 25 questions
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Monday 28 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00058

    Answer: 5.8 × 10-4
  2. 2. Algebra

    Factorise: x² + 2x - 15

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

    Hypotenuse = 32cm, angle = 64°. Find adjacent side

    Answer: 14cm
  4. 4. Ratio

    Simplify: 16:8:16

    Answer: 2:1:2
  5. 5. Statistics

    Calculate the mean of: 41, 32, 48, 32, 5, 26, 8

    Answer: 27.4

Tuesday 29 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    52000000

    Answer: 5.2 × 107
  2. 2. Algebra

    Factorise: x² - 12x + 35

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

    Adjacent = 18cm, angle = 54°. Find opposite

    Answer: 24.8cm
  4. 4. Ratio

    Simplify: 9:18:9

    Answer: 1:2:1
  5. 5. Statistics

    The mean of 6 numbers is 21. If 5 of them are 32, 33, 21, 33, 37, what is the missing number?

    Answer: -30

Wednesday 30 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    16000000

    Answer: 1.6 × 107
  2. 2. Algebra

    Factorise: x² - 9x + 14

    Answer: (x - 7)(x - 2)
  3. 3. Geometry

    Hypotenuse = 22cm, angle = 43°. Find adjacent side

    Answer: 16.cm
  4. 4. Ratio

    Simplify: 12:4:4

    Answer: 3:1:1
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 19, 15, 50, 32, what is the missing number?

    Answer: 74

Thursday 1 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.083

    Answer: 8.3 × 10-2
  2. 2. Algebra

    Factorise: x² + 2x - 48

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

    Adjacent = 23cm, angle = 49°. Find opposite

    Answer: 26.5cm
  4. 4. Ratio

    Express the first part of 3:2 as a fraction in simplest form

    Answer: 35
  5. 5. Statistics

    The mean of 4 numbers is 28. If 3 of them are 49, 38, 32, what is the missing number?

    Answer: -7

Friday 2 July 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    7900000

    Answer: 7.9 × 106
  2. 2. Algebra

    Factorise: x² + 6x - 7

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

    Hypotenuse = 31cm, angle = 33°. Find adjacent side

    Answer: 26cm
  4. 4. Ratio

    Simplify: 12:20:24

    Answer: 3:5:6
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 25, 20, 33, 35, what is the missing number?

    Answer: 77