Understanding Integers

Understanding integers has now become a math standard for students starting as young a 3^rd grade.  An Integer is a number on a number line that goes on forever. Whole numbers greater than zero are positive integers. These numbers are to the right of zero. Whole numbers less than zero are negative integers. These are to the left of zero. There is a good video that explains what are integers is.

An integer is a positive and negative number that is commonly used to give meaning to all sort of real-world situations form body weight, sports, music charts, stock market and many more. As you can see an integer is an important part of life. 

Here are some basic operations one needs to know when dealing with integers.

OPERATIONS WITH INTEGERS

Addition When addends have the same sign, add. Use that sign when you write the sum. 6 + 9 = 15 -10 + -20 = -30 When addends have different signs, subtract. Use the sign of the greater addends -5 + 3 = -2 46 + -12 = -34	Subtraction To subtract an integer, add its opposite. The opposite of 12 is -12 4 -12 = 4 + -12 = -8 9- (-12) = 9 + 12 = 21 The opposite is -15 is 15 1-(-15) = 1 + 15 =16 -20-(-15) =-20 + 15 = -5
Multiplication When the factors have the same sign, the product is positive. 7 x 8 = 56 -15 x -5 = 75 When the factors have different signs, the product is negative. -5 x 4 = -20 3 x -11 = -33	Division When the dividend and the divisor have the same sign, the quotient is positive. 36 / 6 = 6 -150 / -5 = 30 When the dividend and the divisor have different sign, the quotient is negative. 28 / -2 = -14 250 / 10 = -25

When looking into integers, I found that there are many different websites that deal with Integers, Absolute Value & Operations with Integers. This activity includes finding absolute value of integers, comparing integers, and addition, subtraction, multiplication and division of integers.