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Adding Integers 2

adding integers
by

Jan Murray

on 2 December 2010

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Transcript of Adding Integers 2

adding integer a adding integers like signs like signs
add numbers
give the same sign


unlike signs
subtract numbers
give sign of larger absolute value number examples

-20+12 =

instead of adding, subtract the numbers because they are different signs.

20- 12 =

so then subtract

20- 12 =-8

I gave the negitive sign to the eight
because the larger numbers has a negitive sign. unlike signs like signs example

-12+-19=

so now you add because the signs are alike
they are both negative

-12+-19=

so now add them up

-12+-19=-31 now you know how to add integers



dont forget or else !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

thank you for watching
Full transcript