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Adding, subtracting, multiplying, and dividing positive and negative numbers . By: will, codyr ., and ayla. Multiplying. Multiply two positive numbers equals positive Multiplying a positive and negative equals a negative Two negatives multiplied together equals a positive
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Adding, subtracting, multiplying, and dividing positive and negative numbers By: will, codyr., and ayla
Multiplying • Multiply two positive numbers equals positive • Multiplying a positive and negative equals a negative • Two negatives multiplied together equals a positive • Ex. 2 * 2 = 4 • Ex. 5 * -2 = -10 • Ex. -4 * -3 = 12
Dividing • Dividing two positives integers equals a positive • Dividing a negative and positive integers equals a negative • Dividing two negatives integers equals a positive • Ex. 4 / 2 = 2 • Ex. -8 / 4 = -2 • Ex. -16 / -2 = 8
Addition • Adding two positives equals a positive • Adding a negative and positive together equals negative or positive( need to subtract the integers) • Adding two negatives together equals a negative • EX. 9 + 9 = 18 • Ex. -16 + 8 = -8 or 16 + -8 = 8 • Ex. -9 + -9 = -18
Subtraction • Subtracting two positives together equals a negative or positive. • Subtracting a positive and negative together equals a positive or negative • Subtraction two negatives together equals to positive or negative • Ex. 8 – 4 =4 • 8 + -4=4
Adding the opposite • When adding the opposite change the subtracting sign to an addition sign and change the positive or negative number to its opposite