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Today's Goal: Today students will be able to divide integers (positive and negative whole numbers).
Solving Division Problems:
As with all other one step equations, division equations are solved using the opposite operation. The opposite of division is multiplication.
Example:
a ÷ 3 = 15, solve for a.
Use the opposite of division, which is multiplication, to remove the ÷ 3 and isolate the variable. Remember, whatever you do to one side of the equals sign you must do the same things to the other side of the sign.
Video Lesson
Another Example:
Remember, fractions are division probelms. So, another way you may see a division equation is as a fraction. It is solved the same way.
Practice Sites
Grade or No Grade - Like the TV game show. See what grade you can get.
XP Math - How many problems can you get right in a minute?
Number Ball Division - Tough game. Are you up for it??
Additional Information for future equations involing multiplying negative numbers.
Dividing integers is all about the sign. Divide the numbers together then look at the signs. If the signs are the same (both positive or both negative) the answer (quotient) is positive. If the signs are different (one positive and one negative) the answer (quotient) is negative.
Examples:
12 ÷ 3 = 4 - Same signs - both positive
-12 ÷ -3 = 4 - Same signs - both negative
12 ÷ -3 = -4 - Different signs - one positive, one negative
-12 ÷ 4 = -4 - Different signs - one positive, one negative
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