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Posted by on Tuesday, January 14, 2014 at 3:20pm.

Hello! I need some help with math! I have tried to do this but I am unsure about my answers. My I will identify my answers with a "<--". Also, if I have missed one, please tell me the right answer! Also, Thanks for your help in advance! Have a nice day!


1. Which of the following expressions is written in scientific notation?

a. 73.4 x 10^5 <-- My Answer!
b. 0.09 × 10^7
c. 80 x 10^3
d. 4.22 x 10^–3

2. Which of the following is 0.0000000708 written in scientific notation?

a. 7.08 x 10^–8
b. 7.8 x 10^–8
c. 708 x 10^–10 <-- My Answer!
d. 70.08 x 10^–9

3. Which expression represents the largest number?

a. 40.1 x 10^–6
b. 4.1 x 10^–7
c. 0.411 x 10^–7
d. 0.04001 x 10^–5 <-- My Answer!

4. Which expression is equal to 1/8000 written in scientific notation?

a. 8.0 x 10^3
b. 1.25 x 10^–4
c. 125 x 10^–5 <-- My Answer!
d. 1.25 x 10^4

5. Which of the following statements is NOT true regarding an expression written in scientific notation in the form of a x 10^n ?

a. The value of a must be greater than or equal to 1 and smaller than 10.
b. The value of n must be an integer.
c. Doubling n results in a doubling of the value of the expression. <-- My Answer!
d. Doubling a results in a doubling of the value of the expression.

6. Which number is equal to 7(3.5 x 10^4) written in scientific notation?

a. 24.5 x 70^4
b. 2.45 x 10^5
c. 24.5 x 10^4
d. 1.05 x 10^5 <-- My Answer!

  • Math! Please Check My Awnser! - , Tuesday, January 14, 2014 at 3:27pm

    Please someone help me!

  • Ms. Sue or Steve Pls Help - , Tuesday, January 14, 2014 at 3:39pm

    Pls :|

  • Math! Please Check My Awnser! - , Tuesday, January 14, 2014 at 4:15pm

    1. Which of the following expressions is written in scientific notation?

    a. 73.4 x 10^5 <-- My Answer!
    b. 0.09 × 10^7
    c. 80 x 10^3
    d. 4.22 x 10^–3 NO ,___<------- ONE digit left of decimal. That is the whole idea.

    2. Which of the following is 0.0000000708 written in scientific notation?

    a. 7.08 x 10^–8 ____HERE<------
    ONE digit left of decimal
    b. 7.8 x 10^–8
    c. 708 x 10^–10 <-- My Answer!
    d. 70.08 x 10^–9

    3. Which expression represents the largest number?

    a. 40.1 x 10^–6 = 4.01*10^5 THE WINNER
    b. 4.1 x 10^–7
    c. 0.411 x 10^–7
    d. 0.04001 x 10^–5 <-- My Answer! THIS IS 4.001 * 10^-7 which is smaller than b or a

    4. Which expression is equal to 1/8000 written in scientific notation?

    1/8 = .125 (we all know that)
    so .125*10^-3 = 1.25 * 10^-4

    a. 8.0 x 10^3
    b. 1.25 x 10^–4 THIS IS MY ANSWER
    c. 125 x 10^–5 <-- My Answer!
    d. 1.25 x 10^4

    5. Which of the following statements is NOT true regarding an expression written in scientific notation in the form of a x 10^n ?

    a. The value of a must be greater than or equal to 1 and smaller than 10.
    b. The value of n must be an integer.
    c. Doubling n results in a doubling of the value of the expression. <-- My Answer! !!!RIGHT !!!!
    d. Doubling a results in a doubling of the value of the expression.

    6. Which number is equal to 7(3.5 x 10^4) written in scientific notation?

    MY WAY 7*3.5 = 24.5
    24.5 * 10^4 = 2.45*10^5

    a. 24.5 x 70^4
    b. 2.45 x 10^5 << BUT THIS IS MINE
    c. 24.5 x 10^4
    d. 1.05 x 10^5 <-- My Answer!

  • Math! Please Check My Awnser! - , Tuesday, January 14, 2014 at 4:19pm

    OMG! Thank You so much!

  • Math! Please Check My Awnser! - , Wednesday, January 28, 2015 at 9:11am

    Hey here are the right answers

    1.D
    2.A
    3.A
    4.B
    5.C
    6.B

    I just failed the test thanks to them so here are the correct answers !!!!

  • Math! Please Check My Awnser! - , Tuesday, February 16, 2016 at 8:27pm

    Thea^ is right and 7. is A

  • Math! Please Check My Awnser! - , Wednesday, January 18, 2017 at 3:25am

    The answers above are ALL CORRECT!

  • Math! Please Check My Awnser! - , Monday, February 6, 2017 at 1:19pm

    thea and anon are right

  • Math! Please Check My Awnser! - , Monday, February 13, 2017 at 7:11pm

    I got 100% thanks!

  • Math! Please Check My Awnser! - , Monday, February 20, 2017 at 7:30pm

    they changed the questions and i got most of them wrong

  • Math! Please Check My Awnser! - , Thursday, February 23, 2017 at 3:50pm

    All of those answers are Wrong it's
    A
    A
    B
    C
    B
    C
    A

  • Math! Please Check My Awnser! - , Thursday, March 9, 2017 at 3:23am

    i hate stupid idiots like you lilly.. just for someone in the future. Lillys answers are all freaking wrong i just got a fu*king 3/7 from her answers. the ACTUAL answers are D,A,B,B,C,B,A .... stupid idiots want people to get a bad score. I seriously hate stupid lilly girl go f*ck yourself stupid b*ch

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