Question

Convert the given tree diagram into numerical expressions.

Answer 1

To find the numerical expression for the given tree diagram, let us start from the bottom of the tree diagram.

Let us add 5 to 7, we get:

5+7=12 [1 mark]

Now add 9 to 2, we get 11.

Now, we shall write the expression without changing the value.

The expression can be written as $(5+7)-(9+2)=12-11=1$
[1 mark]