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February Solutions

Number Theory | Measurement | Geometry |
Patterns, Algebra, and Functions | Data, Statistics, and Probability

Remember: These are open-ended problems. There could be other solutions than the ones we are giving.

Number Theory

1. 7 times

2. Cartoons for 1 1/2 hours = 90 minutes

3. 189 tadpoles

4. Chocolate = 105 pounds; Sugar = 210 pounds; Butter = 147 pounds

5. Derrick = .05 + .36 +.32 = .73 gallon
Ron = .05 + .45 = .5 gallon


Measurement

6. About 33 years. Accept 33 or34.

7. You know that 40 square feet are covered by 1 pound. You have 5000 square feet, so you need 125 pounds of seed.

8. 47 sections, 1 gate, 46 posts.


Geometry

9. 5 diagonals; 6 diagonals

10. Many possible answers.

11.


Patterns, Algebra, And Functions

12. 16 cars; 46 times

13. Day 9

14. Triangle = 4; Rectangle = 5; Circle = 3


Data, Statistics, And Probability

15. Many possibilities.

16. 75% or 9/12. Gone up. Now it is 2/8, which equals 1/4.

17. 57-1: Chuck; 45,000 gallons
57-2: Jim; 60,000 gallons
57-3: Greg; 56, 250 gallons
57-4: Vanessa; 45,000 gallons
57-5: Darren; 78, 750 gallons

HOW DID YOU DO?

 

February Problems

Back to Open-Ended Math Index