Partition two-digit numbers into tens and ones

I can represent and interpret the structure of two-digit numbers on part-part-whole and bar models.

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Year 2

Partition two-digit numbers into tens and ones

I can represent and interpret the structure of two-digit numbers on part-part-whole and bar models.

Download all resources

Share activities with pupils

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Lesson details

Key learning points

Two-digit numbers can be partitioned into tens and ones.
The order of the digits indicates their value.

Keywords

Partition - To split a whole up into parts.
Combine - To put parts together to make a whole.
Part - A piece or section of a whole.
Whole - All of something; complete.

Common misconception

Children may reverse the digits in a two-digit number, not understanding the value of each digit, or partition, for example, 54 into 5 and 4

Return to the use of practical equipment and ask children to prove they are right using it. They could also explain their ideas to a friend to encourage them to spot their own errors.

Display stem sentences and use them routinely to articulate their thinking, particularly with regard to the value of each digit. Present part-part-whole models in a range of orientations so that children understand the structure of the model and how that relates to the numbers used.

Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).