2. Which number represents 4.6 x 10^-4 in standard form?

Question

A. 0.00046
B. 460,000
C. 0.000046
D. 46,000
3. Yoshi wrote the number 7,614,000 in scientific notation. Type the number in the empty box given below to complete the scientific notation.
__ x 10^6
4. Which numbers are less than 1,000? Mark all that apply.
A. 8 x 10^2
B. 9 x 10^3
C. 5 x 10^1
D. 3 x 10^4
5. Which of the following numbers is not written in scientific notation?
A. 0.5 x 10^-12
B. 6 x 10^2
C. 7.23 x 10^-3
D. 1.7 x 10^4
6. 5 x 10^6 is how many times greater than 5 x 10^2?
5 x 10^6 is ____times greater than 5 x 10^2
7. Which of the following is NOT a true statement?
A. 8 x 10^-4 is 1,000 times as great as 9 x 10^-7
B. 4 x 10^8 is 100 times as great as 4 x 10^6
C. 2 x 10^6 is 10 times as great as 2 x 1^5
D. 7 x 10^-2 is 1,000 times as great as 7 x 10^-6
8. Choose the appropriate sign for each of the following expressions in the table. 1.98 x 10^5 ? 8.91 x 10^5, 2.14 x 10^5 ? 2.4 x 10^3, 8.341 x 10^-6 ? 2.15 x 10^-2. The options for ? are <, >, or =.
9. When doing a computer calculation, Cooper got an answer that said 1.45E - 12. What is this number in scientific notation?
A. 1.45 x 10^-12
B. 1.45 + 19^-12
C. 1.45 x 10^12
D. -12 x 10^1.45
10. The combined volume of all the tanks at an aquarium is 2.25 x 10^4 gallons. The aquarium plans to install a new dolphin tank with a volume of 350,000 gallons. What will be the total volume of all of the tanks at the aquarium after the new dolphin tank is installed?
A. 5.75 x 10^5
B. 5.75 x 10^4
C. 3.725 x 10^4
D. 3.725 x 10^5
11. Express your answer in scientific notation. 8.3 x 10^9 - 2.1 x 10^7
A. -8.279 x 10^9
B. 6.20 x 10^2
C. 8.279 x 10^9
D. -6.20 x 10^2
12. A rectangular section of wilderness will be set aside as a new wildlife refuge. Its dimensions are 6 x 10^3 meters by 3 x 10^4 meters. Find the area of the land in square meters. Put your answer in scientific notation.
A. 1.8 x 10^8
B. 9.0 x 10^9
C. 18 x 10^7
D. 90 x 10^8
13. Multiply the expression on the left and match them with their appropriate result. (2 x 10^-3) x (3 x 10^7), (9.1 x 10^9) x (2.6 x 10^2), (6.77 x 10^-12) x *1.12 x 10^-6). Options are (6 x 10^4), (2.366 x 10^-12), and (7.5824 x 10^-18).
14. Write the following quotient in scientific notation: (1.9 x 10^8) divided by (2 x 10^3)
__ x 10^4
15. What is the quotient of the following expression? (5.6 x 10^2) divided by (1.4 x 10^-6)
A. 4 x 10^8
B. 4 x 10^7
C. 4 x 10^10
D. 4 x 10^9

Answer 1

2. C. 0.000046
3. 7.614 x 10^6
4. A. 8 x 10^2, C. 5 x 10^1
5. B. 6 x 10^2
6. 10,000 times greater
7. C. 2 x 10^6 is 10 times as great as 2 x 10^5
8. <, >
9. A. 1.45 x 10^-12
10. A. 5.75 x 10^5
11. C. 8.279 x 10^9
12. D. 90 x 10^8
13. (6 x 10^4), (7.5824 x 10^-18)
14. 9.5 x 10^4
15. C. 4 x 10^10