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Puzzle Zone
Flex your math muscles with these fun brainteasers!
By Jessica McKenna-Ratjen
Brainteaser
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Ready to Recycle
The town of Wastenot recently started a new plastic recycling program. Before the program, no families recycled. On Day 1, 2 families recycled their plastic. After that, the number of families recycling doubled every day! On Day 16, every family in Wastenot recycled their plastic.
On which day were exactly half of Wastenot’s families recycling?
Shape Finder
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Too Many Triangles!
How many triangles can you find in this shape? Don’t forget that some large triangles may have smaller triangles inside!
Complete the Equation
Hungry Hamster
Tiny the Hamster got out of his cage and chomped through this equation!
Can you figure out what the missing numbers should be?
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Money Math
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Flower Power
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At Flower Power Florists, every bouquet must include at least 5 flowers. Each flower costs a different amount. You have only a few bills and coins in your pocket.
Flowers For Sale
- Sweet Peas: $0.75 Each
- Irises: $1.15 Each
- Snapdragons: $1.25 Each
- Tulips: $1.20 Each
- Roses: $2.50 Each
- Orchids: $3.75 Each
What arrangement of 5 different flowers could you afford for a bouquet?
ANSWERS: Ready to recycle: Day 15. If the amount doubles every day, then half of Wastenot’s families would have recycled on the day before every family did; Too Many Triangles: 27 total triangles; Hungry Hamster: 135 + 264 = 399; Flower power: All answers that include 3 arrangements of 5 flowers that sum to less than $7.48 are valid.
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