This activity is about finding the missing number in adding sums.
Example
Find the value of the missing number.
25 | + | = | 28 |
Answer
We need to find the difference between 25 and 28.
We can turn this into a subtraction problem and work it out by doing 28 - 25 = 3
Or we can count on from 25.....26, 27, 28 ........ that's 3 numbers.
So, the answer is 3
You can see that there is often more than one way of finding the answer to a maths problem. The important thing is to choose the way that works best for you.
Which of these ways do you find easier?