Number Sense

1). (2 points) 3, 6, 9 and 12 are some multiples of 3. How many multiples of 3 are there between 10 and 226?




Answer: ______

TEAM NO ____ TEAM MEMBERS:

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2). (2 points)
The sum of the first 25 whole numbers is 325.
What is the sum of the next 25 whole numbers: 26 + 27 + 28 + . . . + 49 + 50 =
(Hint: factor 26 out of the sums, like this: ( 26 (1 + 2 . . .) first)

Answer:________

3). (2 points)
30! represents the product of all whole numbers from 1 through 30 like this:
    30 x 29 x 28 x 27 x ... 5 x 4 x 3 x 2 x 1
What is 30!/28! ?
(Hint: write it out as a fraction. You should see a pattern)

Answer:________

4). (2 points) n3 = 4913 What is the value of n?

Answer:________

5). (2 points) Express the following as a simple fraction in lowest terms:
   

Answer:________