Volume 8 Math Stars Worksheet Page 31
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35MathStars Home Hints
7.
Find three trapezoids with whole
Mathematics can make life easier for you when
number base and height measurements and
you become a good estimator. Spatial estimation
with an area of 60 square units.
helps you plan how you will rearrange your
furniture or how far to jump to cross a puddle of
water. Using estimation helps you know whether
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you have enough money for your purchases
before you get to the check-out line. We become
good estimators by practicing. Use your number
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sense and spatial sense to think about what the
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answers to problems will be before you start to
solve them.
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5.
Using the digits 1, 2, 3 (without
repeats) and any operations write the:
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a) largest possible real number
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b) smallest positive, real number possible.
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6.
A certain antibiotic has a half-
8.
A game is to be played with the two
life of two hours. This means that every
spinners pictured here. List all the possible
two hours, half of the amount of the
sums and the probability of each.
medicine is available in the bloodstream.
At 10:00 a.m. a patient receives 500 mg of
the antibiotic.
2
3
1
3
a) How much of the antibiotic remains at
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4
2
10:00 a.m. the next day if no more serum is
administered?
b) The antibiotic is effective only when
Setting Personal Goals
more than 100 mg is in the bloodstream. If
When you encounter a new situation, you use
the first dose is given at 10:00 a.m., when
all of your previous experiences to figure out
should the next dose be given?
the current problem. Reasoning mathemati-
cally means using your brain power to think
logically and sequentially, to put prior
knowledge with new information. Set the
goal of developing mathematical power and
use your thinking power to achieve the goal!
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