Lemmara logoLemmaraWorked solution

4024/12 Oct/Nov 2025, Question 2: Adding, Subtracting, Multiplying and Dividing Decimals

Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks

اقرأ هذا الحل مشروحاً بالعربي ←

The question, in short

Work out two short arithmetic calculations: a decimal subtraction and a multiplication of two negative numbers.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Part (a) · 1 mark

Subtract 0.2 from 0.78.

  1. 10.78 − 0.20 = 0.58

Answer0.58

Part (b) · 1 mark

Multiply −8 by −5.

  1. 1Negative × negative = positive: −8 × −5 = 40

Answer40

Stuck on a step? Read the free lesson: Adding, Subtracting, Multiplying and Dividing Decimals

Practise more adding, subtracting, multiplying and dividing decimals questions

Real 4024 past-paper questions, marked on your working like the exam, with a worked solution for every part.

Practise free on Lemmara

More past-paper questions on adding, subtracting, multiplying and dividing decimals

Also searched as: 4024/12/O/N/25 · 4024_w25_qp_12 · 4024 w25 12 · question 2.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.