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PROBLEM SOLVING 203

[one] Sue bakes a batch of biscuits. A batch of her biscuits is 12. She eats one quarter of this first batch. She then cooks another 2 batches. How many biscuits does she now have? Hint

[two] Volleyball team t-shirts cost $12 each. A school buys 24 of them. How much did the school spend? Hint

[three] Booley High School spent $171.00 on t-shirts. If each t-shirt cost $9.00, how many t-shirts did this school buy? Hint

[four] Ellis could write 21 words every minute. How many words could he write in 10 minutes? Hint

[five] Lydia spent $120.00 in one week and $135.00 the next week. How much MORE did she spend the second week than she did in the first? Hint

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This is best solved by using multiplication.
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$120 - $135 = answer
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This problem is best set out like this: 36 4 = answer
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Use multiplication.
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$171 $9 = answer
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21 x 10 = answer
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This problem can be set out like this: 9 + 24 = answer
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Use subtraction.
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To find out one quarter (1/4) of a number, you divide that number by 4.
For this problem, one (1) batch of biscuits = 12 biscuits.
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24 x $12 = answer
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One quarter (1/4) of 12 = 3, so after Vianna ate a quarter of the first batch, there were 9 biscuits left.
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Vianna baked another 2 batches of biscuits. This is a total of another 24 biscuits which must be added to the number of biscuits left over from the first batch (9 biscuits).
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