Problem Solving Worksheets With Answer Key - Math Stars Page 4
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39Vol. 7 No. 1
4. (460, 525) If sales were 1,842,100 in 1995, then there were 921,050 in 1990 and 460,525 in 1985.
This is an excellent example of a working backwards strategy or moving from the "answer" to the
question.
5. (Solutions will vary) You may wish to begin a "Four Fours" bulletin board to display student
solutions. Each subsequent newsletter will contain a "four fours" problem for increasingly larger
numbers.
6. (1.125m) The solution can be obtained by a series of divisions i.e. 72÷ 2 = 36; 36 ÷ 2 = 18 etc. or
6
the expression 72(.5)
= 1.125
7. (0.5) If P(red or blue) = 0.9, then P(orange) = 0.1. If P(red) = 0.4 then P(red or orange) = 0.4 + 0.1
or 0.5.
8.
Program
Time
Ben
News
5:00
Boykin
Science Fiction
7:00
Bill
Movie
8:00
Boyd
Wrestling
3:00
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