# Definitions

From WikiEducator

Arithmetic Workout | ||
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Multiplication Workout | Introduction | Getting Started | Preknowledge | The Simulation | Activities | Conclusions | Resources and Links | Definitions | |

## number

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A number is a concept from mathematics, used to count or measure. People use symbols to represent numbers; they call them numerals. Common places where numerals are used are for labeling, as in telephone numbers. This extract is licensed under the Creative Commons Attribution-ShareAlike license. It uses material from the article "Number", retrieved 20 03 12. |

## addition

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In arithmetic, addition is finding the total of two or more numbers. The sign for addition is "+". The name for the sign "+" is "plus". This extract is licensed under the Creative Commons Attribution-ShareAlike license. It uses material from the article "addition", retrieved 20 03 12. |

## subtraction

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Subtraction is the arithmetic operation for finding the difference between two numbers. The expression 7 − 4 = 3 can be spoken as "seven minus four equals three," "seven take away four leaves three." The sign for subtraction is "−". The name for the sign "−" is "minus". This extract is licensed under the Creative Commons Attribution-ShareAlike license. It uses material from the article "subtraction", retrieved 20 03 12. |

## keyboard

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A computer keyboard is an important device that allows a person to enter symbols like letters and numbers into a computer. It is the main input device for most computers. This extract is licensed under the Creative Commons Attribution-ShareAlike license. It uses material from the article "Keyboard_(Computer)", retrieved 20 03 12. |

## enter key

enter key

A common symbol for the enter key It is usually found near the middle of the right hand side of the keyboard. |

## click

click

Navigate the cursor over the object you wish to click. Tap or press the (left) mouse button or the (left) button on a track pad. Release the button. |