Use addition and subtraction to solve problems in different contexts
I can use addition and subtraction strategies to solve problems in different contexts.
Use addition and subtraction to solve problems in different contexts
I can use addition and subtraction strategies to solve problems in different contexts.
Lesson details
Key learning points
- By looking carefully at the numbers involved, you can choose the most efficient strategy.
- When numbers are close together, finding the difference is the most efficient strategy.
- Sometimes, we can use known addition facts to make finding the difference even more efficient.
Common misconception
On the magic squares, children will often miss the fact that it is a two step problem involving addition and subtraction. They may think you have to add the two numbers in the row/column or diagonal.
Start with a simpler magic square. The easier ones feature the numbers 1-9 and total 15 diagonally, vertically or horizontally. Once they understand them, introduce 2-digit and 3-digit magic squares.
Keywords
Minuend - The minuend is the number being subtracted from.
Subtrahend - A subtrahend is a number subtracted from another.
Difference - The difference is the result after subtracting one number from another.
Partition - Partition is the act of splitting an object or value down into smaller parts.
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).
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Starter quiz
6 Questions
Exit quiz
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