When adding integers, remember the following pneumonic devices: L A S S U S B
Adding Like Terms (LASS) -6 + (-8) Like signs, so simply Add -6 + (-8) Like signs, so simply Add = 14, and then keep the same sign = 14, and then keep the same sign - Adding Unlike Terms (USB) 6 + (-8) Unlike signs, so Subtract 8 - 6 2 -= 2 Then keep the sign of the Bigger number
Lets Practice Click on the correct answer. 1. -5 + 3 = a. 2 b. -2 c. 8 d. -8
Aw! Come on! Dont look so sad! You can try again! try again!
Youve unlocked the right door! Now on to subtracting integers
Subtracting Integers When you subtract integers, its easy to remember the following: COPY, CHANGE, CHANGE
4 – 9 Copy the first number 4+(-9) Change the minus sign to addition Change the second number to its opposite (sign) Now you are adding unlike signs (USB), so subtract 9 - 4 And Keep the sign of the bigger number = 5 -
More Practice 4. 2 – 10 = a. 8 b. -8 c. 12 d. -12
Lets not run out of steam here! You can give it another shot! another shot
Youre blasting off! Way to go!! Blast your way to the next one!next one
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