Predict: I predict this will be about working backwards.

Read: I think of a number,multiply it by 3 and the divide by 2. If the result is 18, what was the original number?

Clarify: I had nothing to clarify.

The Big Question: What was the original number?

Mathematicians toolbox: I used the strategy of working backwards.

Solving: The first thing I did was turn the operations shown into the invert operation of them. So it became 18 times 2 divided by 3. 18 times 2 equals 36. 36 divided by 3 equals 12. So they started with 12.

Conclusion: In conclusion I used the strategy of working backwards to get my answer of 12.