Mathematics Problem Solving
Volume 4, Number 27, April 12, 1999
Fractions - Food for Thought
Mrs. Rich bought a huge chocolate cake to share with her class. She cut the cake into 24 equal slices.
1. Then she decided to take one-fourth of the cake home to share with her family. How many slices was that?
2. What fraction of the cake did she keep in school for her class?
3. How many slices did she give to her class?
4. Travesty Troll was baking a batch of her famous poison ivy cookies. The recipe called for 3/8 cup of oil altogether: one fourth cup of mole oil and _______ cup of snake coil oil. Hint: Two-eighths is equivalent to one- fourth.
Miss Joan baked a great big cherry pie and put it in the faculty room for anyone who wanted to have some. She carefully cut the pie into twenty equal slices.
Mr. Smitty thanked her for his slice and as she handed it to him, he asked, “How many cherries did you put into that large pie?”
“I can’t tell you, because it’s my secret recipe,” replied Miss Joan.
5. In less than a minute, Mr. Smitty knew just about how many cherries were in the pie. How did he figure it out?
Copyright 1999 RHL
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