Lesson

Can you represent worded statements using numbers or number sentences? Try this question before continuing.

Ray has 10 comic books. Danielle has 3 less comic books than Ray.

Write a number sentence to find the number of comic books that Danielle has.

Worked Solution

Idea summary

Some words that we may find in a story could be:

Addition | Subtraction |
---|---|

More | Less |

Add | Subtract |

Give to | Take away |

Plus | Minus |

A man drove 10 km East, then 24 km West, then 8 km East.

a

Is he now East or West of his original position?

A

Back to his original position

B

West

C

East

Worked Solution

b

How far West is he from his original position?

Worked Solution

Idea summary

When we express numbers as directed numbers, our number indicates a value and direction.

Positive | Negative |
---|---|

Profit | Loss |

Ascending | Descending |

Up | Down |

Forward | Backward |

Investigate everyday situations that use integers. Locate and represent these numbers on a number line.