Volume 8 Math Stars Worksheet Page 6
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35MathStars Home Hints
9. Some new operations are defined as
Sometimes the hardest part of solving a
follows:
problem is just getting started. Having some
a # b = a x b + 2
steps to follow may help you.
i.e. 3 # 5 = 3 x 5 + 2 = 17, and
1. Understand the information in the problem
and what you are trying to find out.
a & b = a + b x 2
2. Try a strategy you think might help you
i.e. 3 & 5 = 3 + 5 x 2 = 13.
solve the problem.
3. Find the solution using that strategy or try
Find the value of:
another way until you solve the problem.
a) 12 # 3
4. Check back to make certain your answer
makes sense.
b) 16 & 7
c) (3 & 10) # 12
7. A box in a dark closet contains seven green
balls, five red balls, and four black balls. How
Is either operation commutative? How do you
many balls must you take to be sure you have at
know?
least two balls of every color?
8. Scientists are studying the temperature
changes at an experimental weather station. The
first reading is 22˚ F. If the temperature rose 10˚ at
the second reading, dropped 25˚ at the third reading,
dropped 15˚ at the fourth, and rose 21˚ at the fifth.
When was the lowest reading recorded?
Setting Personal Goals
Being able to ask good questions will help you
in many ways. Use these to solve problems:
• What information do I know?
• What else do I need to find out?
• What question am I trying to answer?
• Have I missed anything?
• Does my answer make sense?
Set the goal of asking good questions!
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