Year 1 - Maths
Explain where 6, 7, 8 and 9 lie on a number line
Composition of numbers 6 to 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 numbers 6 - 10 by partitioning in different ways. They will learn what odd and even numbers are and how they can be partitioned. They will identify a missing part when a whole is partitioned into two parts where one of the parts is known.
Lesson Summary
You will learn to explain how 6, 7, 8 and 9 lie between 5 and 10 on a number line.
Key Notes
- One more and one less can be used to order numbers 0 to 10
- A number line shows the position of numbers 0 to 10
- On a 0 to 10 number line, 5 is in the middle. It is the midpoint.
- Knowledge of relative size of 6, 7, 8, 9 can be used to position these numbers on the number line.
Vocabulary To Learn
- Number line: A line with numbers placed in their correct position.
- Order: You can order numbers from the smallest to the largest or from the largest to the smallest. The order stays the same when you count.
- One more: One more than is when there is a greater amount by one or another item in the set.
- One less: One less than is when there is a smaller value by one.
Common Mistakes To Avoid
- Pupils do not understand that intervals or marks on a number line need to be equally spaced and that in these cases each mark represents one number.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
One more and one less can be used to order numbers 0 to 10. A number line shows the position of numbers 0 to 10.
2. Use this key word in a maths sentence and explain it clearly. 'Number line'
A line with numbers placed in their correct position. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils do not understand that intervals or marks on a number line need to be equally spaced and that in these cases each mark represents one number. Correction: Make connections between number tracks and number lines showing that the intervals are counted on a number line. Expose pupils to vertical and horizontal number lines showing all numbers, including beyond 10, to familiarise them with their structure.
More Lessons In This Unit
- Compare two numbers and say which is greater than or less than the other Study Guide
- Count a set of objects and match the spoken number to the written numeral and number name Study Guide
- Estimate where 6, 7, 8 and 9 lie on an unmarked number line Study Guide
- Explain how even and odd numbers can be partitioned Study Guide
- Explain what odd and even numbers are and the difference between them Study Guide
- Explore the numbers 6 to 10 using the parts and wholes on a number line Study Guide
- Identify a missing part when a whole is partitioned into two parts Study Guide
- Identify the whole and parts of the numbers 6 to 10 using the five and a bit structure Study Guide
- Order and sort numbers into odd and even sets Study Guide
- Partition the numbers 6 and 7 in different ways Study Guide
- Partition the numbers 6 to 10 in different ways Study Guide
- Partition the numbers 8 and 9 in different ways Study Guide
- Represent the numbers 6 to 10 using a five and a bit structure Study Guide
- Skip count in odds and evens Study Guide
Browse all guides in the Year 1 Maths guide library.