Year 2 - Maths
Represent multiples of ten in an expression or an equation
Composition of multiples of 10
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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 represent multiples of ten using numerals and names and use knowledge of facts and unitising to add and subtract multiples of ten.
Lesson Summary
You will learn to represent multiples of ten in a calculation.
Key Notes
- Multiples of ten can be represented with addition of tens.
- 10 + 10 + 10 is equal to three tens which is equal to 30
- An expression shows the number of groups being added.
- An equation includes the sum or total shown using =
Vocabulary To Learn
- Multiple: A multiple is the result of multiplying a number by another whole number.
- Expression: Contains one or more values, where each value is separated by an operator such as the addition symbol +
- Equation: An equation is used to show that one number or calculation is equal to another.
Common Mistakes To Avoid
- Children may think that each group of ten is worth more than the last when we count up in tens.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Multiples of ten can be represented with addition of tens. 10 + 10 + 10 is equal to three tens which is equal to 30.
2. Use this key word in a maths sentence and explain it clearly. 'Multiple'
A multiple is the result of multiplying a number by another whole number. 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 think that each group of ten is worth more than the last when we count up in tens. Correction: Ensure children understand that we count all as we go along to find how many things are in a group, the last number we say tells us how many there are.
More Lessons In This Unit
- Add and subtract multiples of ten Study Guide
- Estimate the position of multiples of ten on a 0 - 100 number line Study Guide
- Explain that one ten is equivalent to ten ones Study Guide
- Explain what happens when you add and subtract ten to a multiple of ten Study Guide
- Represent multiples of ten using their numerals Study Guide
- Represent multiples of ten using their numerals and names Study Guide
- Solve problems involving multiples of ten Study Guide
- Solve problems involving multiples of ten in a range of contexts Study Guide
- Use knowledge of facts and unitising to add and subtract multiples of ten Study Guide
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