Grade 1

Display the Headline Story pictured in the sidebar to the class. Sometimes it helps to review what children* do* know and what they *do not* know. In this problem, they *do* know that Cindy has two quarters and that Jan has more money than Cindy does. They* do not* know what coins or how much Jan has. What amounts are possible? What amounts are impossible?

Cindy has two quarters. Jan has more money than Cindy.

- Jan has to have at least 51¢.
- Jan might have $10 or maybe $100.
- The amount that Jan has cannot be a two-digit number with a tens digit of 4 or less.
- If Jan’s amount is larger than a two-digit number, then the tens digit can be 4 or less. For example, if Jan has $1, that is 100¢ and the tens digit is zero.

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