Page 42 - Math Booklet Prep1first part1_Neat

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Multiplying and dividing integers

First: Multiplying Integers:

A) 3 X 4 = 3+3+3+3 =12
B) (-3) X 4 = (-3)+ (-3)+ (-3)+ (-3)=(-12)

-1 0 1 2 3 4 5 6 7 8 9 10 11 12

-12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1

• The product of two positive integers = positive integer.
• The product of two negative integers = positive integer
• The product of two integers having different signs = negative integer

Examples

find the result of each of the following :

(a) 5 X 6 = 30 (b) (-5) X (-6)= 30
(c) (-5) X 6 = - 30 (d) -5 X (-6) = -30

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