operations of intergers using the order of operations.

1. Operations of integersusing the real number line Isidra Pastrano Symone Wright December 3, 2009 St. Philip’s College

2. Addition of Integers When adding two numbers with same sign, add their absolute value and apply the common sign. -2 + (-4) -(2 + 4) = -6 The common sign is negative, the sum equals -6. Adding numbers with different signs First find the absolute value of the addends. 2 + (-7), the absolute value of |2| =2, and |-7| =7 Next Subtract -(7-2)= -5.

3. Multiplication of Integers When multiplying two integers with the same sign the result is always a positive integer. When multiplying two integers with the different sign the result is always a negative integer. 5x5= 25 5 x (-5)= -25 (-5)x(-5)= 25 (-5)x (5)= -25

4. Division of Integers When dividing two integers with the same sign, the result is always positive. When dividing two integers with different signs, the result is always negative. = 5 = 5 = -5

5. Subtraction of Integers When subtracting integers, you can always change it to adding the opposite of that integer. 5 - 7= 5 + (-7)= -2 -7 – 5 = -(7+5)= - 12 -8 – (-3) = -8 +3 = -5