Composition of numbers 11 to 19
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Threads
Why this why now
This unit introduces two-digit numbers between 10 and 20, rehearsing the counting sequence and beginning to explore two-digit place value, building on the counting pattern to 100 in earlier units. Here pupils will represent 2-digit numbers in different ways to show the composition of ten and a bit. Number facts to ten will be applied within 20 and doubling to ten will be extended to 20.
Prior knowledge requirements
- Count and represent numbers to 10
- Partition numbers into tens and ones
- Use number bonds to build teen numbers
Threads
Why this why now
This unit introduces two-digit numbers between 10 and 20, rehearsing the counting sequence and beginning to explore two-digit place value, building on the counting pattern to 100 in earlier units. Here pupils will represent 2-digit numbers in different ways to show the composition of ten and a bit. Number facts to ten will be applied within 20 and doubling to ten will be extended to 20.
Prior knowledge requirements
- Count and represent numbers to 10
- Partition numbers into tens and ones
- Use number bonds to build teen numbers
Composition of numbers 11 to 19
In this unit pupils will explain 11-19 as cardinal and ordinal numbers. They will double and halve numbers 6-9 and use addition and subtraction facts to add and subtract within 20.
10 lessons in unit
slide decks, worksheet PDFs, quizzes and lesson overviews. You can select individual lessons from the Composition of numbers 11 to 19 unit and download the resources you need, or download the entire unit now. See every unit listed in our primary maths curriculum and discover more of our teaching resources for primary maths programmes.