Subtract 3-digit multiples of 10 by finding the difference between them
I can subtract 3-digit multiples of 10 by finding the difference between them.
Subtract 3-digit multiples of 10 by finding the difference between them
I can subtract 3-digit multiples of 10 by finding the difference between them.
Lesson details
Key learning points
- When numbers are close together, the difference between them is small.
- Finding the difference means we count on from the subtrahend to the minuend.
- A number line or a bar model can represent finding the difference.
Common misconception
Children will often reverse the minuend and subtrahend because they don't always appear in the order that they would in an expression.
Give time to ensure that the children understand the bar model representation and encourage them to discuss which number is the minuend and which is the subtrahend before engaging in a strategy for mental subtraction.
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.
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).
Video
Loading...
Starter quiz
6 Questions
80
60
25
5
Exit quiz
6 Questions
