Year 4 - Maths
Solve problems involving adjacent multiples of nine
Represent counting in nines as the 9 times table
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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 counting in 9s as the 9x table explaining the relationship between adjacent multiples of 9. They will use known facts from the 10x table to solve problems involving the 9x table.
Lesson Summary
You will learn to solve problems involving adjacent multiples of nine.
Key Notes
- Adjacent multiples of nine have a difference of 9 and alternate between odd and even numbers.
- If you add 9 to a multiple of nine you get the next multiple of nine.
- If you subtract 9 from a multiple of nine you get the previous multiple of nine.
Vocabulary To Learn
- Adjacent multiple: An adjacent multiple is a multiple next to another. It could be before or after.
Common Mistakes To Avoid
- Pupils may find it difficult to solve problems or misunderstand questions.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Adjacent multiples of nine have a difference of 9 and alternate between odd and even numbers. If you add 9 to a multiple of nine you get the next multiple of nine.
2. Use this key word in a maths sentence and explain it clearly. 'Adjacent multiple'
An adjacent multiple is a multiple next to another. It could be before or after. 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 find it difficult to solve problems or misunderstand questions. Correction: Model clearly how to identify key phrases and words which will identify the operation and equation required for word problems. This could involve drawing bar models or other representations.
More Lessons In This Unit
Browse all guides in the Year 4 Maths guide library.