Year 3 - Maths
Use column addition to solve problems
Column addition
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will identify the addends and the sum in column addition. They will use their knowledge of place value to correctly lay out column addition.
Lesson Summary
You will learn to use column addition to solve problems.
Key Notes
- Estimate the answer first to improve your accuracy
- The addends are written in columns with the same value digits in the same column
- The sum is recorded underneath the addends with the same value digits in the same column
Vocabulary To Learn
- Addend: An addend is a number added to another.
- Sum: The sum is the the total when numbers are added together.
- Column addition: Column addition is a way of adding numbers by writing a number below another.
Common Mistakes To Avoid
- Pupils may not refer to the size of the numbers when manipulating the digit cards.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Estimate the answer first to improve your accuracy. The addends are written in columns with the same value digits in the same column.
2. Use this key word in a maths sentence and explain it clearly. 'Addend'
An addend is a number added to another. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils may not refer to the size of the numbers when manipulating the digit cards. Correction: Encourage them to talk about the size of the numbers and whether the digit cards represent ones, tens or hundreds.
More Lessons In This Unit
- Add 2-digit numbers using column addition Study Guide
- Add 3-digit numbers using column addition Study Guide
- Identify the addends and the sum in column addition Study Guide
- Use column addition to add numbers by regrouping ones Study Guide
- Use column addition to add numbers by regrouping tens Study Guide
- Use column addition with regrouping in ones and tens Study Guide
- Use column addition with regrouping to solve problems Study Guide
- Use known facts and strategies to accurately and efficiently calculate and check column addition Study Guide
- Use place value to correctly lay out column addition Study Guide
Browse all guides in the Year 3 Maths guide library.