| Problem |
Hint |
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3) The gym teacher wants all 16 children in Mr. Rom's 1st grade class to get to know each other.
His plan is to have them work with a different partner each day. How many different partner pairs
are possible?
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This is a combinations problem.
1. How many ways to choose the first partner of a pairing? ____
2. After you choose that partner, how many students can he/she be paired with? _____
3. Since order doesn't count, (A paired with B is the same as B paired with A) divide this by 2 = _____ pairings.
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4) Fill in the blanks in the list of numbers such that the only mode for the list will be 9 and the
median will be 15.
4, 9, _____, _____, 13, ____, 17, 23, 23, 28
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1. Since there are two 23s in this list, the number of 9s must be ___ to make it the mode.
2. Since there are 10 numbers in this list, the median must be the average of the middle 2 numbers.
3. What number, averaged with 13 is 15? _____
4. The completed list is: ____________________
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5) Joe's dad tells Joe he can have the bag of fruit chews he's holding if he can solve this riddle:
There are three flavors: strawberry, orange and lemon. There are 4 strawberry chews. The
probability of getting orange is 3/7. The probability of getting lemon is 2/7. How many fruit chews
are in the bag? |
1. Add the probabilities of orange and lemon chews = ____
2. Subtract this from 1 = _____.
This is the probability of a strawberry.
3. Using this, compute the total number of chews = _____
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1. The table to the right is the multiplication table for values up to 12. Study it in order to answer this question.