## A List of Lessons in the Notation Curriculum

## What Is Notation?

Some numbers can be very large...Some numbers can be very small...

Writing out so many numerals can be very time consuming, especially if they are part of a long calculation. Scientific and Engineering notation is a way of writing very large or very small numbers in a standard (shorter!) way.

12,300,000,000 = 1.23 × 10^{10} |
Scientific notation |

0.0000000123 = 12.3 × 10^{−9} |
Engineering notation |

## What Is Scientific Notation?

Scientific notation writes a number as a number between 1 and 10 multiplied by a power of 10. The number below is written in scientific notation. It is said as "1.2 times 10 to the 3".## Dictionary Definition

The Oxford English Dictionary defines scientific notation as "a system of representing some given number as a product of a number with an absolute value between 1 and 10 and a power of 10 (as 2 × 10^{2}for 200)."

## What Is Engineering Notation?

Engineering notation writes a number as a number between 1 and 1,000 multiplied by a power of 10 that has an exponent that is a multiple of 3. The number below is written in engineering notation. It is said as "123.4 times 10 to the 3".- 123.4 is between 1 and 1,000.
- 10
^{3}is a power of 10. The exponent is 3, which is a multiple of 3. 10^{6}, 10^{9}and 10^{12}also have exponents that are multiples of 3.

## The Curriculum

The lessons are grouped into mini-curriculum to help you organise your learning. A brief description is given for each mini-curriculum. Click the**MORE**button to learn more.

## Scientific Notation

Scientific notation is a way of writing very large or very small numbers as a number between 1 and 10 multiplying a power of 10. In this mini-curriculum, you will learn about scientific notation.

## Engineering Notation

Engineering notation is a way of writing very large or very small numbers. It is written as a number between 1 and 1,000 that multiplies a power of 10 that has an exponent that is a multiple of 3 (3, 6, 9 etc). In this mini-curriculum, you will learn about engineering notation.

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