30 free lessons · Worked examples and practice

Grade 4 math

Extend whole-number reasoning to larger calculations and explore how fractions and decimals represent quantities. Use clear units and diagrams to make geometry and measurement problems manageable.

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Use the pictures and worked reasoning as a starting point. Make your own sketch, explain your choices, and check the result.

Your study guide

What you will explore.

Reason about factors and whole-number operations
Connect fractions and decimals
Solve geometry and measurement problems

Before you begin

Review multiplication, division, and the meaning of a fraction. Keep a multiplication chart or a sketch nearby when it helps you focus on the new idea.

Review Grade 3

How to study these lessons

Estimate first, show the calculation, and compare the result with your estimate. For measurement, label every length and write the unit beside your answer.

Work at your own pace. Open a hint when you need it, then try again before revealing the complete explanation.

Grade labels are starting-point guides; school sequences vary. University lessons introduce selected topics and assume the prerequisites listed on each page.

Practice with a moving example

750 guided practice chapters for Grade 4.

Try a distinct question, open a hint, compare the worked solution, and explore its interactive animation. These scenario chapters give you more practice within this level’s topics.

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1 teaching video is available for this level. Find each recording with its exact matching lesson or practice question.

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Your Grade 4 lesson collection.

The lessons appear in their suggested study order. Choose the first lesson for a starting point, or use the search and subject filters to review a particular skill. Read the prerequisites whenever you change topics.