# Scientific Notation Tutorial

## Powers of 10 Notation

#### See the pattern below?

 Decimal Number "Broken down" into tens Powers of ten form 100 10 X 10 102 (1 followed by 2 zeroes) 1000 10 X 10 X 10 103 (1 followed by 3 zeroes) 10,000 10 X 10 X 10 X 10 104 (1 followed by 4 zeroes) 100,000 10 X 10 X 10 X 10 X 10 105 (1 followed by 5 zeroes) 1,000,000 10 X 10 X 10 X 10 X 10 X 10 106 (1 followed by 6 zeroes) 1,000,000,000 10 X 10 X 10 X 10 X 10 X 10 X 10 X 10 X 10 109 (1 followed by 9 zeroes)

#### 104 is read as "ten to the fourth power." In this case, 10 is the base, and 4 is the "exponent," indicating how many times we multiply the base by itself.

Notice also that the exponent is the number of zeroes after the 1 in the coresponding decimal number. Therefore, 1017 is 100,000,000,000,000,000 in decimal notation. Can you see now why we like to use scientific notation?

101 is a 1 followed by 1 zero, or simply 10. What is 100 ? Choose from the options below.

 100 = 0 100 = 1 100 = 10

Questions? Ask the designer, Jim Heath