Headline Story
The Eraser Store, #5
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Introduction
Share the Headline Story with the class. Encourage students to use logical reasoning to draw conclusions based on information from the story.
Headline Story
A certain three-digit number has 2 as its hundreds digit. It is a multiple of 5.
Possible student responses
- The number must be greater than 199, but less than 300.
- Its ones digit must be 0 or 5.
- The smallest the number could be is 200.
- The largest the number could be is 295.
- The number could be 210.
- It could also be 285.
- The tens digit can be any digit.
- We can count all of the possible numbers: for any of 10 possible tens digits, the ones digit can be either 0 or 5, so there are 10 X 2, or 20, possible numbers.
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