Solve problems explaining which strategy is most efficient
I can solve problems, explaining which strategy is most efficient.
Solve problems explaining which strategy is most efficient
I can solve problems, explaining which strategy is most efficient.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- We know different strategies for addition and subtraction including mental and written strategies.
- Looking at the numbers helps us see which strategy is most efficient.
- Missing number problems can be rearranged to identify an efficient strategy to solve the problem.
Keywords
Subtrahend - The subtrahend is the number to be subtracted. It is the second number in a subtraction.
Efficient - Being efficient means finding a way to solve a problem quickly whilst also maintaining accuracy.
Common misconception
Children may automatically resort to the use of the formal column algorithms. These are not always the most efficient methods.
What do you notice about the numbers? Is there a mental strategy that you could use?
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
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Exit quiz
6 Questions
column addition
partitioning
number line
constant difference then column subtraction
column subtraction