Multiplying and dividing negative numbers

The topic  appears under the 7th Grade Math Mission. This exercise practices multiplying and dividing with integers.

Types of Problems
There is one type of problem in this exercise:


 * 1) ''Find the product or quotient": This problem provides two numbers. The student is asked to find the product or quotient of the numbers and write it in the space provided.Madnn1.png

Strategies
Knowledge of arithmetic operations on integers can assist on this problem. The multiplication and division rules can be summarizes succinctly.
 * 1) When multiplying or dividing two numbers of the same sign, the result will be positive.
 * 2) When multiplying or dividing two numbers of opposite signs, the result will be negative.
 * 3) A negative times a negative is a positive can be understood by viewing the opposite of the number as a reflection over zero on a number line. Then a double negative is a double reflection back to the original spot.
 * 4) In language a double negative also can be thought of as cancelling itself out.