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Remember...the working
backwards strategy involves beginning with the final answer to the
problem, and, using the inverse operations, arriving at the starting
number.
Mrs. Stone opened a box of cookies and used half of them in her
children's lunches. Later; Mrs. Stone and her neighbor each
ate 2 cookies. when Mr. Stone got home from work he ate the
last 3 cookies. How many cookies were in the box? |
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for the solution
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Jack goes to the gym each week.
Every week he lifts 8 pounds more than the previous week.
During the ninth week he lifts 250 pounds. How much was he
lifting during his 1st week?
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for the solution
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Students at Hilltop Middle School are dismissed at 2:55p.m.
During the day there is a 10 minute homeroom period, 8 class periods
of 41 minutes each, and a 34 minute lunch period. If 4 minutes
is allowed for passing between each period, what time does school
start each morning?
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for the solution |
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Postage is 34 cents for the first ounce and 21 cents for each
additional ounce. If the cost of mailing a package is $2.23,
how much does the package weigh?
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for the solution
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If a + b = 6, b + c = 11, and c +
d = 4, find the value of a if d = 1
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for the solution
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