When you subtract, you deduct; whatever you've been deducted, takes a reduction form, and the answer of that subtraction or any subtraction for that matter always takes an addition form at the end. This book is made in order to help kids understanding the veritable answer of two numbers when they get together in order to produce a reduction as an answer. The same answer, however, can also produce a quantitative answer when you take the result of any take away and add it to the middle number in order to have the top number as a final result. This book is made easy in order to help children assimilating the contents of it.