Keystones Bedrock — Jan 1 - 7 | Maths Vault

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Bedrock Jan 1 - 7 25 questions

Monday 26 December 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: ⁸⁄₁₁ + ¹⁄₁₁

Answer: ⁹⁄₁₁
2. Algebra

Simplify: 5x + 4x

Answer: 9x
3. Geometry

Opposite = 10cm, hypotenuse = 14.cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 50% of 175

Answer: 87.5
5. Statistics

Find the mean of: 18, 13, 20

Answer: 17

Tuesday 27 December 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: ⁶⁄₁₁ + ¹⁄₁₁

Answer: ⁷⁄₁₁
2. Algebra

Simplify: 5x + 4x

Answer: 9x
3. Geometry

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

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 15:9

Answer: 5:3
5. Statistics

Find the range of: 15, 28, 21, 28, 20

Answer: 13

Wednesday 28 December 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 2.4 + 1.1

Answer: 2.4 + 1.1 = 3.5
2. Algebra

Simplify: 9x + 7x

Answer: 16x
3. Geometry

Opposite = 12cm, hypotenuse = 13.9cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 10:4

Answer: 5:2
5. Statistics

Find the mean of: 6, 11, 12

Answer: 9.6666666666667

Thursday 29 December 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: ¹⁄₅ + ²⁄₅

Answer: ³⁄₅
2. Algebra

Solve: x + 12 = 19

Answer: x = 7
3. Geometry

Opposite = 5cm, hypotenuse = 10cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 12:8

Answer: 3:2
5. Statistics

Find the range of: 32, 9, 10, 33, 37

Answer: 28

Friday 30 December 2022

Keystones #1 · Five questions · Open this day only

1. Number

Calculate: 30 + 25

Answer: 30 + 25 = 55
2. Algebra

Find the next term: 25, 29, 33, 37, ...

Answer: 41
3. Geometry

Find the area of a circle with radius 8cm

Answer: 201.06cm²
4. Ratio

Simplify the ratio 35:40

Answer: 7:8
5. Statistics

Find the mean of: 16, 19, 13

Answer: 16