Year 2 - Maths
Explain and represent multiplication when a group contains zero or one items
Grouping objects in different ways and relating to multiplication
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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 describe how objects are grouped and will represent equal groups as repeated addition and multiplication.
Lesson Summary
You will learn to explain and represent multiplication when a group contains zero or one items.
Key Notes
- You can explain and represent multiplication when a group contains zero or one items.
- The group size can be 1 and the number of groups can be 1
- If there are 3 groups of zero then we can write 0 + 0 + 0 or 3 x 0
Vocabulary To Learn
- Zero: Zero is the number that represents no amount or objects. When we add zero to a number, the result is just the number, unchanged.
- Group / grouping: A set of things with an identity.
Common Mistakes To Avoid
- Children may struggle to comprehend groups of zero. For example children may see four empty plates as four groups of one.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
You can explain and represent multiplication when a group contains zero or one items. The group size can be 1 and the number of groups can be 1.
2. Use this key word in a maths sentence and explain it clearly. 'Zero'
Zero is the number that represents no amount or objects. When we add zero to a number, the result is just the number, unchanged. 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 struggle to comprehend groups of zero. For example children may see four empty plates as four groups of one. Correction: Use a context where the number of groups is still visible when the group size is zero. Remember to make the distinction as to what is representing zero. Use the familiar stem sentences There are ___ groups of ___.
More Lessons In This Unit
- Describe how objects have been grouped Study Guide
- Explain that objects can be grouped in different ways Study Guide
- Identify and explain each part of a multiplication equation Study Guide
- Represent equal groups as multiplication Study Guide
- Represent equal groups as repeated addition Study Guide
- Represent equal groups as repeated addition and multiplication Study Guide
- Use knowledge of multiplication to calcuate the product Study Guide
- Use knowledge of multiplication to solve problems Study Guide
- Use knowledge of multiplication to solve problems in a range of contexts Study Guide
Browse all guides in the Year 2 Maths guide library.