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Cornerstone Mar 16 - 22 25 questions
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Monday 16 March 2026

Keystones #75 · Five questions · Open this day only

  1. 1. Number

    Simplify: 44 × 44

    Answer: 48
  2. 2. Algebra

    Solve: 9x - 7 = 2x + 7

    Answer: x = 2
  3. 3. Geometry

    Convert 4.5kg to g

    Answer: 4500g
  4. 4. Ratio

    In a ratio of 1:4, what fraction is the first part?

    Answer: 1⁄5
  5. 5. Statistics

    A die is rolled 30 times. How many times would you expect to get a 6?

    Answer: 5

Tuesday 17 March 2026

Keystones #76 · Five questions · Open this day only

  1. 1. Number

    Simplify: x6 × x2

    Answer: x8
  2. 2. Algebra

    Solve: 4x + 2 = 3x + 11

    Answer: x = 9
  3. 3. Geometry

    Convert 5kg to g

    Answer: 5000g
  4. 4. Ratio

    In a ratio of 1:2, what fraction is the first part?

    Answer: 1⁄3
  5. 5. Statistics

    A fair coin is flipped 84 times. How many heads would you expect?

    Answer: 42

Wednesday 18 March 2026

Keystones #77 · Five questions · Open this day only

  1. 1. Number

    Simplify: x7 × x7

    Answer: x14
  2. 2. Algebra

    Solve: 8x + 6 = 4x + 34

    Answer: x = 7
  3. 3. Geometry

    Convert 8kg to g

    Answer: 8000g
  4. 4. Ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics

    A fair coin is flipped 106 times. How many heads would you expect?

    Answer: 53

Thursday 19 March 2026

Keystones #78 · Five questions · Open this day only

  1. 1. Number

    Simplify: 62 × 62

    Answer: 64
  2. 2. Algebra

    Solve: 8x - 9 = 4x + 19

    Answer: x = 7
  3. 3. Geometry

    Convert 2120ml to litres

    Answer: 2.12 litres
  4. 4. Ratio

    Simplify the ratio 15:40

    Answer: 3:8
  5. 5. Statistics

    A fair coin is flipped 128 times. How many heads would you expect?

    Answer: 64

Friday 20 March 2026

Keystones #79 · Five questions · Open this day only

  1. 1. Number

    Simplify: x4 × x6

    Answer: x10
  2. 2. Algebra

    Solve: 5x - 12 = 3x + 2

    Answer: x = 7
  3. 3. Geometry

    Convert 5 litres to ml

    Answer: 5000ml
  4. 4. Ratio

    Share 64 in the ratio 3:1

    Answer: 48 and 16
  5. 5. Statistics

    A fair coin is flipped 176 times. How many heads would you expect?

    Answer: 88