This activity is about finding three more facts from a given subtraction fact.
Example
We know that 260 - 136 = 124.
Which other facts can we get from this?
Answer
There are two addition facts and one subtraction fact that we can find from this.
Addition
The two smaller numbers add to make the largest.
124 + 136 = 260
136 + 124 = 260
Subtraction
260 - 124 = 136
If you get confused, think of an easier example such as:
8 - 2 = 6
From this we can get
8 - 6 = 2
and
2 + 6 = 8
6 + 2 = 8
Does that help?