Ratio & ProportionStudy Notes

Worked Example 1: Finding Density

Part of Density · GCSE GCSE Mathematics revision

This study notes covers Worked Example 1: Finding Density within Density for GCSE Mathematics. Revise Density in Ratio & Proportion for GCSE Mathematics with 14 exam-style questions and 3 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 4 of 6 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 4 of 6

Practice

14 questions

Recall

3 flashcards

Worked Example 1: Finding Density

A block has mass 450g and volume 50cm³. Find its density.

Step 1 Write the formula

Density = Mass ÷ Volume

Step 2 Substitute and calculate

D = 450 ÷ 50 = 9 g/cm³

Keep building this topic

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

Method: DMV Triangle Worked Example 2: Finding Mass What Is Density?Key Facts

Practice Questions for Density

Which formula correctly shows how density (D), mass (M) and volume (V) are related?

A. D = M + V
B. D = M × V
C. D = M ÷ V
D. D = V ÷ M

1 markfoundation

Explain what is meant by a density of 5 g/cm³.

2 marksstandard

Quick Recall Flashcards

Density Formula

Density = Mass ÷ Volume. Units: g/cm³ or kg/m³. Cover what you need in the triangle!

Floating Rule

Objects float if their density is LESS than the liquid. Water = 1 g/cm³, so anything under 1 g/cm³ floats.

14 questions on Density — practise free

Instant marking, adaptive difficulty, and 3 spaced repetition flashcards. Free until your GCSEs.

Try PrepWise Free

Method: DMV Triangle

Worked Example 2: Finding Mass