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
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.
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.