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LESSON 11 Subtract Fractions
Mr. Moreno's Aquarium
It is Jacob's and Keenya's turn to feed the tropical fish in Mr. Moreno's classroom aquarium. Jacob sees that the can of fish food is 
full. Every week, the fish eat 
of a can of fish food. Mr. Moreno asks Jacob to estimate how much fish food will be left at the end of the week.
full. Every week, the fish eat of a can of fish food. Mr. Moreno asks Jacob to estimate how much fish food will be left at the end of the week.
“Will the can of fish food be more than half full or less than half full at the end of the week?” asked Mr. Moreno.
- Estimate the amount of fish food that will be left. How would you answer Mr. Moreno's question? Explain your reasoning.
Jacob decides to estimate this way:
- Do you agree with Jacob's estimate? Explain why or why not.
- Find an exact answer to the problem using fraction circle pieces. Show how you solved the problem.