# Shortcuts - Easy Subtraction

Eva was 8 years and 7
months when this video was made.

**The Problem**

Suppose that you had 23 snakes and 5 of them slithered
away. How many would you have left?

**What To Look For In This Video**

- Instead of taking 5 from 23 Eva first takes 3 and then takes 2.
As
far as I know, no one has ever taught Eva to solve problems in this
way,
or even suggested as much. It is because
- she understands what the word problem means, and
- she has the ability to reason logically,

- It is interesting that Eva starts by explaining that this is the
way
that
**she**would solve the problem. It seems to me that she understands that there are lots of ways in which it might be solved. - My only role here was to pose the problem and correct a very unimportant mistake.