Predict: I predict that i will have to use “working backwards.”

Read: I think of a number, divide it by 2 and then add 12. If the result is 20, what was the original number?

Clarify: nothing to clarify.

Big Question: What was the original number?

Mathematicians toolbox: I used working backwards.

Solve : first i worked backwards so i got 20 and added 12 this becomes 32 then divided that by 2 which equalled to 16 and the answer was 16,

Conclusion : i learnt that working backwards was going to help me get the answer to questions like this were i don’t have the original number.