Year 1 - Maths
Understand addition as increasing a quantity
Additive structures: 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 combine 2 or more parts to make a whole. They will learn addends can be represented in any order and that the = sign shows the whole and sum of the parts are equal.
Lesson Summary
You will learn to describe addition stories which involve increasing an amount and write equations to represent them.
Key Notes
- Addition can involve increasing a quantity.
- Using 'First, then, now' stories can be useful when representing and understanding addition as an increase in quantity.
Vocabulary To Learn
- First: Coming before all others in time or order; earliest.
- Then: At that time.
- Now: At the present time.
- Increase: To make something larger/greater in size or quantity.
Common Mistakes To Avoid
- Children may write the addends in any order when representing addition as an increase in quantity.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Addition can involve increasing a quantity. Using 'First, then, now' stories can be useful when representing and understanding addition as an increase in quantity.
2. Use this key word in a maths sentence and explain it clearly. 'First'
Coming before all others in time or order; earliest. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Children may write the addends in any order when representing addition as an increase in quantity. Correction: Present and discuss errors, focusing on what each number in an equation represents.
More Lessons In This Unit
- Add parts to find the value of the whole and write the equation Study Guide
- Combine parts using the addition symbol Study Guide
- Find the missing part in an equation Study Guide
- Partition a whole into two parts and write as a subtraction equation Study Guide
- Understand that parts can be represented in any order Study Guide
- Understand the relationship between addition and subtraction Study Guide
- Understand the use of the equals sign in equations Study Guide
- Understanding part-part-whole relationships Study Guide
- Using bar models to subtract Study Guide
Browse all guides in the Year 1 Maths guide library.