Use knowledge of calculating within 20 to solve problems involving statistics
I can use knowledge of calculating within 20 to solve problems involving statistics.
Use knowledge of calculating within 20 to solve problems involving statistics
I can use knowledge of calculating within 20 to solve problems involving statistics.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- When adding three addends, it is efficient to first add two addends using a known fact e.g. pair to 10 or double.
- When adding, we can bridge 10 by partitioning a part so that we can ‘make 10’.
- When subtracting, we can bridge 10 by partitioning a part to create a part that is equal to the ones digit of whole.
- The difference can be found through subtraction.
Keywords
Interpret - Understand and give meaning to mathematical data.
Efficient - Not wasting time or effort. An efficient strategy is one we can carry out easily.
Bridge 10 - Addition or subtraction that crosses the 10 boundary.
Difference - The result of subtracting one number from another. Way in which two or more things we are comparing are not the same.
Common misconception
Children may struggle to correctly read the information presented within the pictogram/bar chart.
A ruler can be used to help children line up the top of the bar with the scale. Model this as a strategy to support accurate reading.
Equipment
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).
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
