Operations with Integers

By: Melissa and Sebastian

Adding

  • If the problem is 4+4=? and the digits are positive it will always be positive so its 4+4=8.

  • -8+4=? if one digit is negative and the other is positive it will always be negative so its -8+4=-4.

  • -9+-3=? if you have 2 negative numbers the answer will always be negative so its -9+-3=-12.

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Subtracting

  • If both signs are positive it will always be positive, 14 - (-6) = 20.

  • If both signs are negative it will always be negative. -12-6=-18.

  • Unlike signs like -4+3=? will always be negative, so the answer would be -1.


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Multiplying

  • The product of a positive integer and a negative integer is a negative integer. -3*5=-15.

  • The product of two negative integers is a positive integer. -6*-5=30.

  • If you have two positive integers is a positive integers 3*4=12.

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Dividing

  • If we have a negative and a positive for example -12/4=? the answer will always be negative so we divide and the answer is -3.

  • If we have negative divided by negative the answer will always be positive for example -4/-4= 1.

  • If we have positive divided by negative the answer will always be negative, ex. 8/-4= -2.

EASY-BIB

"Adding Integers." Pinterest. N.p., n.d. Web. 11 Feb. 2016. <https://es.pinterest.com/pin/140878294567048804/>.


"Subtracting Integers." Pinterest. N.p., n.d. Web. 11 Feb. 2016. <https://es.pinterest.com/pin/541557923921028801/>.


"Multiplying and Dividing Integers." Pinterest. N.p., n.d. Web. 11 Feb. 2016.