Volume 8 Math Stars Worksheet Page 24
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35MathStars Home Hints
7.
There are 120 students in the
Calculators are important tools. They do not
tenth grade class at Mt. Carmel High
replace mathematical thinking; you must tell
School. Three science courses are offered;
the calculator what numbers and operations to
and forty students take Biology, forty-four
use. Calculators allow students to focus their
take Chemistry and thirty-two take
energies on solving problems and to easily try
Physical Science. Twenty-three students
alternative solutions. They also allow students
to solve problems that were too difficult for
take Biology and Chemistry, twelve take
pencil and paper. Number sense and good
Biology and Physical Science while
estimation skills are important when students
eighteen students take Chemistry and
use technology to carry out computations.
Physical Science. Three students are
Explore some "what if" situations with the
taking all three courses.
calculator. "What if the cost of gas goes up
4¢... What if we build the patio 2 feet wider..."
a) How many students take:
5.
In the figure below, each small
only Biology?
square tile has an area of one square unit.
only Chemistry?
only Physical Science?
b) How many students are not taking a
science course?
a) Rearrange the small squares, keeping a
rectangular shape, but make the perimeter
as large as possible.
b) Rearrange the small squares, keeping a
rectangular shape, but make the perimeter
as small as possible.
6.
If you start at 8 a.m. on Wednesday
Setting Personal Goals
morning, January 1st and count by ones,
Accuracy is very important to everyone.
one number per second, when (day and
Pharmacists must always measure accurately
time) will you reach one million?
when preparing prescriptions and carpenters
must cut supporting boards precisely to fit.
Careless mistakes may be avoided in the
classroom by computing carefully, checking
back over work, and writing numbers clearly
and neatly. Remember: If work is worth
doing, it is worth doing well.
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