NumberStudy Notes

Worked Example 4: Real World Problem

Part of Negative Numbers — GCSE Mathematics

This study notes covers Worked Example 4: Real World Problem within Negative Numbers for GCSE Mathematics. Revise Negative Numbers in Number for GCSE Mathematics with 12 exam-style questions and 22 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 9 of 13 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 9 of 13

Practice

12 questions

Recall

22 flashcards

Worked Example 4: Real World Problem

The temperature at midnight was −4°C. By morning it had risen by 9°C. What is the morning temperature?

Solution

Start temperature: −4°C

Temperature rise: +9°C

Final temperature: −4 + 9 = 5°C

Keep building this topic

Read this section alongside the surrounding pages in Negative Numbers. That gives you the full topic sequence instead of a single isolated revision point.

Worked Example 3: Double Negative Higher Level: BIDMAS with Negatives Below Zero What Are Negative Numbers?

Practice Questions for Negative Numbers

Which of these statements is true?

A. -8 > -3
B. -3 > -8
C. -3 < -8
D. -8 = -3

1 markfoundation

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.

2 marksstandard

Quick Recall Flashcards

Using a number line

Draw a horizontal line with 0 in the middle. Negative numbers go LEFT, positive RIGHT. Moving right = adding, moving left = subtracting.

Double Negative Rule

Subtracting a negative = Adding. Two minuses make a plus: 5 − (−3) = 5 + 3 = 8

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Worked Example 3: Double Negative

Higher Level: BIDMAS with Negatives