Remember to check back over the we've seen so far.
Find the value of 58 - 29.
What happens when we have to perform subtraction more than once? One thing we can do is use a number line to help us, as this video shows.
Find the value of 30 - 18 - 7.
If we have larger numbers, we can use a vertical algorithm to solve our subtraction. Let's take a look.
Find the value of 42\,373 - 25\,215.
What happens if we have a story problem? We need to look for the keywords or clues to see what we need to do, as we see in this video.
A farmer has 83 sheep in a paddock. 9 sheep are taken away to the wool shed, and while the farmer is away 2 sheep from a neighboring farm get into the paddock through a hole in the fence.
How many sheeps are in the paddock now?
selects and applies appropriate strategies for addition and subtraction with counting numbers of any size
analyses and creates geometric and number patterns, constructs and completes number sentences, and locates points on the Cartesian plane