Wednesday

January 28, 2015

January 28, 2015

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

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! -
**Electro**, Tuesday, January 14, 2014 at 3:27pmPlease someone help me!

- Ms. Sue or Steve Pls Help -
**Electro**, Tuesday, January 14, 2014 at 3:39pmPls :|

- Math! Please Check My Awnser! -
**Damon**, Tuesday, January 14, 2014 at 4:15pm1. 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! -
**Electro**, Tuesday, January 14, 2014 at 4:19pmOMG! Thank You so much!

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