Year 1 - Maths
Counting to and from 20
Counting to and from 20
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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 consolidate counting to 20 and back They will secure their understanding of the teens numbers in a cardinal and an ordinal context.
Lesson Summary
You can count to 20 and back from 20.
Key Notes
- The numbers are always in the same order when we count up to 20.
- The numbers are always in the same order when we count back from 20.
- Counting objects means matching one word to one object.
- The last number you say is the number in the set.
Vocabulary To Learn
- 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.
- number: A count or measurement that is an idea in our minds. The number is an idea, the numeral is how we write it.
- forward: movement towards the direction you are facing.
- backward: movement in the opposite direction to the one you are facing.
Common Mistakes To Avoid
- Missing out numbers in the teens especially when counting backwards.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
The numbers are always in the same order when we count up to 20. The numbers are always in the same order when we count back from 20.
2. Use this key word in a maths sentence and explain it clearly. '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. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Missing out numbers in the teens especially when counting backwards. Correction: Repeat the count and stress the missing numbers.
More Lessons In This Unit
- Comparing and ordering numbers 0-20 practically Study Guide
- Comparing numbers to 20 Study Guide
- Counting back from 20 Study Guide
- Counting forward to 20 and back from 20 Study Guide
- Counting on Study Guide
- Finding one more and one less using representations Study Guide
- Finding one more and one less with manipulatives and images Study Guide
- Finding the missing number from 0 to 20 Study Guide
- Ordering numbers 11- 20 practically Study Guide
Browse all guides in the Year 1 Maths guide library.