1. Which of the following is a pattern in the table?
A. As the exponent of 10 increases, the number decreases.
B. As the exponent of 10 decreases, the number decreases.
C. The exponents that are less than 0 cause the number to become negative.
D. The exponents that are greater than 0 cause the number to decrease.
2. Which list shows the numbers in order from least to greatest?
A. 3.18 × 10^{−3}, 3.18 × 10^{5}, 3.18 × 10^{6}
B. 3.18 × 10^{6}, 3.18 × 10^{5}, 3.18 × 10^{−3}
C. 3.18 × 10^{−3}, 3.18 × 10^{6}, 3.18 × 10^{5}
D. 3.18 × 10^{5}, 3.18 × 10^{−3}, 3.18 × 10^{6}
3. Which of the following numbers is written in scientific notation?
A. 20 × 10^{7}
B. 20
C. 8.66
D. 8.66 × 10^{7}
4. Is the number 4.74 × 14^{2} in scientific notation?
A. No, it is not in scientific notation. The first factor is not less than 10.
B. No, it is not in scientific notation. The first factor is not greater than or equal to 1.
C. No, it is not in scientific notation. The second factor is not a power of 10.
D. The number is in scientific notation.
5. Reasoning Is 23 × 10^{−6} in scientific notation?
A. No, it is not in scientific notation. The second factor is not a power of 10.
B. No, it is not in scientific notation. The number is not written as a product of 2 factors.
C. No, it is not in scientific notation. The first factor is not less than 10.
D. The number is in scientific notation.
6. Error Analysis Fred's math teacher asks, “Which of the following numbers are written in scientific notation?” Fred says, “4.75 × 10^{8} is written in scientific notation.”
a. What is the correct answer? Check all that apply.
A. 8.87 × 10^{8}
B. 4.75 × 10^{8}
C. 17
D. 4.75
b. What error did Fred make?
A. The number 17 is also written in scientific notation.
B. The number 8.87 × 10^{8} is also written in scientific notation.
C. The number 4.75 × 10^{8} is not written in scientific notation.
D. The number 4.75 is also written in scientific notation.
7. Astronomy In a science fiction book, the distances from four planets to another planet are given in light years. Which list shows the distances in order from least to greatest?
A. 6.35 × 10^{6}, 6.35 × 10^{−2}, 6.35 × 10^{4}, 6.35 × 10^{7}
B. 6.35 × 10^{−2}, 6.35 × 10^{−7},6.35 × 10^{4}, 6.35 × 10^{6}
C. 6.35 × 10^{7}, 6.35 × 10^{6},6.35 × 10^{4}, 6.35 × 10^{−2}
D. 6.35 × 10^{−2}, 6.35 × 10^{4},6.35 × 10^{6}, 6.35 × 10^{7}