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$18.50

Course No. 82

4 hours

**Plant Mathematics –Positive and Negative Numbers**

A refresher course on positive and negative numbers and their relationship to each other: using signs to determine positive or negative qualities; reading scale values above and below zero; adding negative numbers, positive and negative numbers; subtracting large positive numbers from smaller ones; and working problems that require the use of positive and negative numbers.

Prerequisites: *Elementary school mathematics*.

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