Year 3 - Maths
Represent 3-digit multiples of 10 in different ways
Securing place value to 100 and applying to addition and subtraction
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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 use known facts to find multiples of ten that compose 100 and use known facts to find complements to 100. They will add and subtract multiples of ten, bridging 100.
Lesson Summary
You will learn to represent 3-digit multiples of 10 in different ways.
Key Notes
- 3-digit multiples of ten can be expressed as a number of tens.
- 3-digit multiples of ten can be expressed as a number of hundreds and tens.
- The number of tens and the number of hundreds and tens are equivalent.
Vocabulary To Learn
- Equal: Exactly the same amount or value.
Common Mistakes To Avoid
- Pupils should not be encouraged to think about 'adding a zero' to the 2-digit numbers.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
3-digit multiples of ten can be expressed as a number of tens. 3-digit multiples of ten can be expressed as a number of hundreds and tens.
2. Use this key word in a maths sentence and explain it clearly. 'Equal'
Exactly the same amount or value. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils should not be encouraged to think about 'adding a zero' to the 2-digit numbers. Correction: Make careful use of the stem sentences and representations to make sure that pupils are clear that e.g. 12 tens is equal to 120.
More Lessons In This Unit
- Bridge 100 by adding in multiples of 10 Study Guide
- Bridge 100 by subtracting in multiples of 10 Study Guide
- Composition of 100 in 10s and 1s Study Guide
- Composition of 100 in 50s, 25s and 20s Study Guide
- Multiples of 10 that total 100 Study Guide
- Solve problems using knowledge of addition and subtraction of multiples of 10 Study Guide
- Use known facts to find complements to 100 efficiently Study Guide
- Use known facts to find pairs of numbers that total 100 Study Guide
- Use place value knowledge to write addition and subtraction equations Study Guide
Browse all guides in the Year 3 Maths guide library.