Pre-Algebra Formula Sheet

Pre-Algebra Formula Sheet - ie. 3 x 2 = 6N Negative x...

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Adding/Subtracting/Multiplying/Dividing Numbers Adding Rules: Positive + Positive = Positive ie. 5 + 4 = 9 Negative + Negative = Negative ie. (- 7) + (- 2) = - 9 Negative + Positive = SUBTRACT the numbers (don’t pay attention to the signs) and use the sign of the larger number ie. 55 + -34 = 21 Subtracting Rules: Plus, Minus (Change the subtraction to an addition) Multiplying Rules: Positive x Positive = Positive
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Unformatted text preview: ie. 3 x 2 = 6N Negative x Negative = Positive ie. (-2) x (-8) = 16 Negative x Positive = Negative ie. (-3) x 4 = -12 Positive x Negative = Negative ie. 3 x (-4) = -12 Dividing Rules: Positive Positive = Positive ie.12 3 = 4 Negative Negative = Positive ie. (-12) (-3) = 4 Negative Positive = Negative ie. (-12) 3 = -4 Positive Negative = Negative ie. 12 (-3) = -4...
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