Multiplication By 10s
How to multiply by tens:
- Move the decimal point one place to the left in the number ending in zero.
- For example: 8 * 10 would become 8*1
- Do the multiplication (8*1=8)
- Move the decimal point of the product one place to the right (80)
Math For Elememtary
Multiplication and Division
Division By 2s and 3s!
| TWO | ||||
0÷2=0 |
2÷2=1 |
4÷2=2 |
6÷2=3 |
8÷2=4 |
10÷2=5 |
12÷2=6 |
14÷2=7 |
16÷2=8 |
18÷2=9 |
| THREE | ||||
0÷3=0 |
3÷3=1 |
6÷3=2 |
9÷3=3 |
12÷3=4 |
15÷3=5 |
18÷3=6 |
21÷3=7 |
24÷3=8 |
27÷3=9 |
Exponents
Exponents are used when a number is multiplied by itself multiple times. Instead of writing it out it is written another way:
3*3*3=3^3
When Evaluating exponents just multiply the number by itself as many times as the exponent shows:
0^2=0*0=0
1^2=1*1=1
2^2=2*2=4
3^2=3*3=9
4^2=4*4=16
5^2=5*5=25
6^2=6*6=36
7^2=7*7=49
8^2=8*8=64
9^2=9*9=81
10^2=10*10=100
11^2=11*11=121
12^2=12*12=144
Evaluating Equations
An equation is a mathematical statement that has two expressions separated by an equal sign.
For Example: 5X+7=32
First subtract 7 from both sides of the equation: 5X+7-7=32-7 or 5X=25
Next divide 5 from each side: 5X/5=25/5
Then simplify the equation: X=25/5 or X=5
Finally plug the value of X back into the equation: 5(5)+7=32
Created By: Jeff Needs
Last Updated:
02/22/2007 2:41 PM
Contact Me
Search Engines