Number (order and place value)

Lesson

Here are a list of national parks from around the world, and the number of acres they cover.

National Park |
Size (in Acres) |
---|---|

Danali |
4 716 726 |

Gates of the Arctic |
7 523 888 |

Katmai |
3 716 000 |

Kobuk Valley |
1 750 421 |

Lake Clark |
2 636 839 |

Glacier bay |
3 225 284 |

From the following clues, can you identify the park (or parks) with the area described?

- The digit in the ten thousands place is less than the digit in the hundred thousands place.
- The thousands place digit is larger than the digit in the millions place.
- The digit in the ones place is at least twice as large as the digit in the tens place.

- Write another clue that would produce only one park as the answer.
- Choose a park from the table. Write a set of clues to identify your park. Describe your clues to a partner and see if they can guess the park you chose.

*Problem Adapted from an example in Open Ended Questions for Mathematics published by Appalachian Rural Systemic Initiative in 2000. *