Keystones Bedrock — Jan 1 - 7 | Maths Vault

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Bedrock Jan 1 - 7 25 questions

Monday 30 December 2024

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: ⁵⁄₁₁ + ¹⁄₁₁

Answer: ⁶⁄₁₁
2. Algebra

Simplify: 8x + 9x

Answer: 17x
3. Geometry

Find the area of a circle with radius 6cm

Answer: 113.cm²
4. Ratio

Calculate 25% of 49

Answer: 12.25
5. Statistics

Find the mean of: 11, 11, 10

Answer: 10.666666666667

Tuesday 31 December 2024

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: ¹⁰⁄₁₂ + ¹⁄₁₂

Answer: ¹¹⁄₁₂
2. Algebra

Simplify: 9x + 5x

Answer: 14x
3. Geometry

Opposite = 10cm, hypotenuse = 20cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 40:20

Answer: 2:1
5. Statistics

Find the mean of: 6, 16, 10

Answer: 10.666666666667

Wednesday 1 January 2025

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 16 + 22

Answer: 16 + 22 = 38
2. Algebra

Find the next term: 18, 24, 30, 36, ...

Answer: 42
3. Geometry

Opposite = 9cm, hypotenuse = 18cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Calculate 50% of 175

Answer: 87.5
5. Statistics

Find the median of: 17, 7, 16, 13, 9

Answer: 13

Thursday 2 January 2025

Keystones #1 · Five questions · Open this day only

1. Number

Round 516 to 1 significant figure

Answer: 500
2. Algebra

Solve: x + 9 = 14

Answer: x = 5
3. Geometry

Opposite = 10cm, hypotenuse = 11.5cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 24:12

Answer: 2:1
5. Statistics

Find the mean of: 8, 2, 16, 9, 9

Answer: 8.8

Friday 3 January 2025

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 47 + 19

Answer: 47 + 19 = 66
2. Algebra

Simplify: 3x + 6x

Answer: 9x
3. Geometry

Opposite = 10cm, hypotenuse = 20cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 20:16

Answer: 5:4
5. Statistics

Find the mean of: 20, 12, 11, 4, 15

Answer: 12.4