Wednesday 12 November 2014

Don't subtract - add!

Today we looked at how sometimes it is easier to reverse the operation and instead of subtracting we can add to find out the difference! We realised we could solve quite tricky subtraction equations using this strategy!

Here are our showmes explaining our thinking...













Using the number line app on the I Pads

Lately we have been using an app on the I-Pads to help us to add numbers together using the number line.  Here are some examples of the equations we solved.