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September 21, 2014

Homework Help: 7th grade Math quick help Ms. Sue

Posted by Delilah on Wednesday, October 3, 2012 at 7:37pm.

Can you check to see if tese are right?

1.
What is 0.68 written as a simplified fraction?

68/100
17/25
100/68
34/25

2.
Mrs. Whimsey’s class is having a pizza party. If there are 16 students and 4 pizzas cut into 8 slices, what answer choice represents the fraction of one pizza each student receives?

one-third
one-sixteenth
one-fourth
one-eighth

4. Based upon the 2010 census data, the total population of the U.S. is 308,745,538 people. Approximately, what is this population in scientific notation?

3.1 x 10^8
3.1 x 10^7
3.1 x 10^–8
31 x 10^7

5. What is the solution to (4 x 10^3) x (6 x 10^6), written in scientific notation?

24 x 10^9
2.4 x 10^9
24 x 10^18
2.4 x 10^10


8.
What is 0.00000512 in scientific notation?

5.12 x 106
512 x 105
5.12 x 10–6
512 x 10–5

9.
What is thirty-one over five written as a decimal?
1.6
6.1
6.2
6.5


My answers are:

1. 17/25
2. 1/8
4. 3.1 x 10^8
5. 2.4 x 10^9
8. 5.12 x 10^6
9. 6.1

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