Integers

INTEGERS

Today I am going to teach you about INTEGERS. INTEGERS are any number that is a positive or negative number, a counting number. There are 4 different types of INTEGERS, they are multiply, divide, addition, and subtraction and I will teach you about them and their rules.

ADDITION

To do ADDITION,you need to do this:1.If the signs are the same then add and keep the sign of the bigger number.(If your smart you would think that 2 is bigger than -3, but 3 is bigger than 2 so you keep the sign negative.)2.If the signs are different then subtract and keep the sign of the bigger number.( again 2+(-3), 2 is bigger but 3 is the bigger number in this case.)That is how you do ADDITION. Try these: -4+8= ___ ,-6+-8= ___ .

SUBTRACTION

To do SUBTRACTION you need to do the one SUBTRACTION rule. Which is: when you have a SUBTRACTION problem you want to change it to addition by doing plus the opposite of the second number.(What that means is that if you have 3-(-3) you change the last 2 SUBTRACTIONS, or negatives to positives, if you had 3-(-3) you would change it to 3+(+3) ) After that just repeat the addition rules. Try these: -4-(-5)=___ , 3-(-8)=___ .

MULTIPLY/DIVIDE

To MULTIPLY OR DIVIDE you need to follow 2 main rules: 1. If the signs are the same, then the answer is positive. 2. If the signs are different then the answer is negative, pretty easy, right? To get the answer that is positive or negative just ignore the signs and do the problem.(if you have 4.-6 you evaluate the signs first.It comes to a -. Then just do the problem(4.6) this comes to 24 add the sign and the answer together and get a -24 as your answer. Try these: -5.-2=___ , 4/-6=___ .

That is how you do Integers. Here is some help if needed.

http://www.mathleague.com/help/integers/integers.htm

How to solve and check equations

Solving equations is pretty easy to do, but sometimes people get confused. The main rule of equations is, whatever you do to one side of the = sign you do to the other. Say you had 4xb=2o, since you are multiplying you want to divide. Then you do 4/4=0, whatever you do to one side do to the other, 20/4=5. 5+0=5, so 5 is your answer. An equation is something that has 2 numbers, an operation, an equal sign, and a variable. Checking your answer is very easy. All you do is this: First, you rewrite the problem,4xb=20. Then plug the answer into the equation,4x5=20. Next, do the problem, 20=20. Lastly, if the 2 numbers are the same put the variable = the number, b=5.http://www.teacherschoice.com.au/Maths_Library/Algebra/Alg_21.htm

Factors and GCF

Factors are a number that goes evenly into another number like 8 goes into 16 so 8 is the factor. How to find factors is really simple you just get a random number like 36 then check if it is even, which 36 is, that means that one factor of that number is 2. The way to find more factors of that number is doing that number divided by other numbers and by itself so you would get 36, 18, 12, 9, 6, 4, 3, and 2. Now, to do GCF you need 2 numbers,21,36, then you find the factors of both and compare them.The highest number in both of the columns is your GCF. Examples

Exponents and Scientific Notation

Exponents are not really hard you just need to know what you are doing. All you need to do is get some multiplication fact that has all the same numbers in it(3x3x3x3). Then you count the numbers(4) and that is your exponent,or power. Your base is simple it is just your number that you are multiplying by itself (3)Exponents There are two words in exponents and they are base, and exponent. The base is the bigger number which is the number that you are multiplying by itself, and the exponent is the smaller number and it is the one that is the number of times you are multiplying the base. Scientific notation

test

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