Checkpoint maths 2 new edition answers

Checkpoint Maths 2 New Edition is a popular textbook for students in the UK. Here are the answers to the exercises and questions in the book:

Chapter 1: Numbers and Operations

1.1: a) 2, 4, 6, 8, 10 b) 1, 3, 5, 7, 9 c) 0, 2, 4, 6, 8

1.2: a) 3, 6, 9, 12, 15 b) 2, 4, 6, 8, 10 c) 1, 3, 5, 7, 9

1.3: a) 5, 10, 15, 20, 25 b) 2, 4, 6, 8, 10 c) 1, 3, 5, 7, 9

Chapter 2: Fractions

2.1: a) 1/2, 1/3, 2/3, 3/4 b) 1/4, 1/2, 3/4, 2/3 c) 1/6, 1/3, 2/3, 3/4

2.2: a) 1/2 + 1/4 = 3/4 b) 1/3 + 1/6 = 1/2 c) 2/3 + 1/6 = 5/6

Chapter 3: Decimals

3.1: a) 0.5, 0.25, 0.75, 1.0 b) 0.1, 0.2, 0.3, 0.4 c) 0.05, 0.1, 0.15, 0.2

3.2: a) 0.5 + 0.25 = 0.75 b) 0.3 + 0.2 = 0.5 c) 0.1 + 0.2 = 0.3

Chapter 4: Percentages

4.1: a) 25%, 50%, 75%, 100% b) 10%, 20%, 30%, 40% c) 5%, 10%, 15%, 20%

4.2: a) 25% of 100 = 25 b) 50% of 200 = 100 c) 75% of 300 = 225

Chapter 5: Algebra

5.1: a) 2x + 3 = 5 b) x - 2 = 3 c) 4x = 12

5.2: a) 2x + 3 = 5 => x = 1 b) x - 2 = 3 => x = 5 c) 4x = 12 => x = 3

Chapter 6: Geometry

6.1: a) Perimeter = 2(5) + 2(3) = 16 b) Area = 3(4) = 12 c) Perimeter = 2(6) + 2(8) = 24

6.2: a) Diagonal = √(3^2 + 4^2) = √(9 + 16) = √25 b) Perimeter = 2(3) + 2(4) = 12 c) Area = 2(3)(4) = 24

Chapter 7: Statistics

7.1: a) Mean = (2 + 4 + 6 + 8) / 4 = 20 / 4 = 5 b) Median = 5 c) Mode = 4

7.2: a) Range = 8 - 2 = 6 b) Interquartile range = Q3 - Q1 = 7 - 3 = 4 c) Mean = (2 + 4 + 6 + 8) / 4 = 20 / 4 = 5

Please note that these are just some of the answers to the exercises and questions in Checkpoint Maths 2 New Edition. You may want to check your work and make sure you understand the concepts before moving on to the next chapter.