Mammoth Memory

Upper and lower boundary and logic

In the following skills of upper and lower boundaries which include addition, subtraction, multiplication and division we state that you should use logic.

Use your own logic in the next examples 

It's just logic.

 

But what we mean by that is

Addition Big number `+` Big number `=` Biggest number
  Small number `+` Small number `=` Smallest number
           
Subtraction Big number `-` Small number `=` Biggest number
  Small number `-` Big number `=` Smallest number
           
Multiplication Big number `xx` Big number `=` Biggest number
  Small number `xx` Small number `=` Smallest number
           
Division Big number `div` Small number `=` Biggest number
  Small number `div` Big number `=` Smallest number

 

It's obvious. It's logic. Ask yourself what else could it be?

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