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PROBLEM SOLVING 030

Subtraction
[one] George earned $20.00 by delivering newspapers. He spent $5.00 in total on 2
new comics. He also gave $3.00 to his sister so she could go to a
magic show. Next, George decided to put $10.00 in the bank. How
much money did George have left in his pocket?
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[two] Sally was travelling from her school to her house. The distance
between her school and her house is 5km. She had already
walked 3km, so how much further did she have to walk?
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[three] Ann enjoyed playing marbles because she was a very skilful player.
Unfortunately, she had three bad games one day. In the first game,
she lost 3 marbles. In the second game, she lost 5 marbles, and then
she lost 2 more marbles in the last game. If she started with 33
marbles, how many did she have left after those three games?
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[four]Brian had a fortnight to complete an important assignment. After a
couple of days, he hadn't started yet. After another week, he still
hadn't started. How long did Brian have left to finish his
assignment?
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[five] Toby and Sue were looking forward to Christmas. If the date was
December 12th, how many days were there until Christmas?
Hint |
First, you need to add up all the marbles Ann lost.
Another hint
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You subtract the distance she has travelled from the total distance she has to travel.
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25 - 12 = answer
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Ann started with 33 marbles, so the equation to solve this problem is: 33 - 10 = answer
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Couple = 2.
A week = 7 days.
A fortnight = 14 days.
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3 + 5 + 2 = the amount you must subtract from the total number of marbles she started with.
Another Hint
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First you must add up the days Brian has lost. You then subtract this answer from the total number of days he started with.
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A couple of days + a week = 2 + 7 = 9 days LOST.
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14 (a fortnight) - 9 = answer
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George used $18.00. You now subtract $18.00 from $20.00
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Christmas is on the 25th of December.
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First, you need to add up what George has used (spent and saved).
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5km - 3km = answer.
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$5.00 + $3.00 + $10.00 = the amount you must subtract from $20.00
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