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## Answers

**short method**is the shortcut method of something like addition , subtraction , ETC

Example:

*in addition we will add the #s w/ the sum is

*a multiple of 10*

28+13+2+7=?

(we will add 28 and 2 because their sum is 30 which is a multiple of 10)

(then we will add 13 and 7 because their sum is 20 which is a multiple of 10)

SO.....it will be:(from 28+13+2+7 it will then be like this:)

30+20=50