This study notes covers Worked Example 1: Basic Addition within Negative Numbers for GCSE Mathematics. Revise Negative Numbers in Number for GCSE Mathematics with 12 exam-style questions and 22 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 6 of 14 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Worked Example 1: Basic Addition
Calculate: −8 + 5
Method 1: Number Line
Start at −8 on a number line
Move 5 places to the right (adding positive)
−8 + 5 = −3
Method 2: Think of it as subtraction
−8 + 5 is the same as 5 − 8
5 − 8 = −3
Practice questions for Negative Numbers
Which of these statements is true?
Aisha's bank account shows a balance of -45 pounds. She deposits 70 pounds. Explain what her new balance is and what the negative sign meant originally.