Problem Solving Worksheets With Answer Key - Math Stars Page 32
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39Vol. 7 No. 9
6.
How many possible first moves are
1.
Students in Mrs. Cook's class
there on a checkerboard?
were asked to each draw a triangle. Fifteen
of the triangles were right triangles, 12
were
isosceles, and four were neither right nor
isosceles. If there are 29 students in the
class, how many drew isosceles right
triangles?
________
2.
Working alone, the master
painter finished a room in three hours. Her
apprentice required seven hours to com-
plete an identical room. If there is a third
room exactly like the first two, how long
will the job take if they work together?
________
3.
At the Seeds-Be-Gone Watermelon
Stand, Farmer Green charges a fixed
Strategy of the Month
amount for the first three watermelons you
What if you know the result of a situation, but
buy and an extra amount for each
you don't know the beginning? For example,
additional watermelon. If seven melons
you might know that you end up with thirteen
cost $16.00 and ten melons are $22.00,
baseball cards after doing a certain number of
what is the fixed price for the first three
trades and you want to figure out how many
cards you had before the trading started.In that
watermelons?
____________
case you need to work backwards; you have to
think about your actions in reverse order. This
4.
In the addition problem below, if
strategy works for any sequence of actions
M and N are one-digit positive integers,
when you know the end result rather than the
what is the greatest possible value of N?
starting place. Try working backwards to find
the starting number on this flow chart:
8 + M + N = 15
________
??
- 1
7
5.
At Donna's Deli, salads are $0.21 an
ounce and an empty plate weighs three
÷ 2
ounces. What is the cost if the scale reads
1.25 pounds?
________
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