Worksheet

Powers of ten and scientific notation

Grade 7 Math Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

  1. “A: 4 × 10^5 B: 9 × 10^2 C: 2.5 × 10^5 D: 7 × 10^3” Ren's science notes list four numbers. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

  2. “A: 3 × 10^6 B: 8 × 10^3 C: 5 × 10^6 D: 1.2 × 10^4” Tala's science notes list four numbers. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

  3. “A: 6 × 10^2 B: 2 × 10^-2 C: 4 × 10^-3 D: 1.6 × 10^1” Ari's science notes list four numbers. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

  4. “A: 0.0035 B: 2 × 10^-2 C: 9 × 10^-4 D: 5 × 10^-3” Esme's notes list four numbers, and one is not in scientific notation. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

  5. “A: 7 × 10^4 B: 650,000 C: 1.2 × 10^5 D: 9 × 10^3” Jun's notes list four numbers, and one is not in scientific notation. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

  6. A shell is 0.038 m long, and Milo found it at the beach. How do you write 0.038 in scientific notation?

  7. Noah's phone calculator shows 45 × 10^3, but the first part has two digits. How do you write the same number in scientific notation?

  8. The TV screen in Pia's game room shows 0.35 × 10^5 points, but the first part is less than 1. How do you write the same number in scientific notation?

  9. Ari's quiz card shows 6.1 × 10^-3. A star sticker waits for the right choice. Which number is equal to 6.1 × 10^-3?

    • 0.00061
    • 0.0061
    • -0.0061
    • 6100

  10. Bo's robot prints 9.2 × 10^-4 and waits. Only one choice matches it. Which number is equal to 9.2 × 10^-4?

    • -0.00092
    • 92,000
    • 0.00092
    • 0.000092
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Powers of ten and scientific notation

Answer Key - Grade 7 Math Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.

  1. “A: 4 × 10^5 B: 9 × 10^2 C: 2.5 × 10^5 D: 7 × 10^3” Ren's science notes list four numbers. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

    B, D, C, A

  2. “A: 3 × 10^6 B: 8 × 10^3 C: 5 × 10^6 D: 1.2 × 10^4” Tala's science notes list four numbers. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

    B, D, A, C

  3. “A: 6 × 10^2 B: 2 × 10^-2 C: 4 × 10^-3 D: 1.6 × 10^1” Ari's science notes list four numbers. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

    C, B, D, A

  4. “A: 0.0035 B: 2 × 10^-2 C: 9 × 10^-4 D: 5 × 10^-3” Esme's notes list four numbers, and one is not in scientific notation. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

    C, A, D, B

  5. “A: 7 × 10^4 B: 650,000 C: 1.2 × 10^5 D: 9 × 10^3” Jun's notes list four numbers, and one is not in scientific notation. Write the letters with commas, like P, Q, R, S. What is the order from least to greatest?

    D, A, C, B

  6. A shell is 0.038 m long, and Milo found it at the beach. How do you write 0.038 in scientific notation?

    3.8 × 10^-2

  7. Noah's phone calculator shows 45 × 10^3, but the first part has two digits. How do you write the same number in scientific notation?

    4.5 × 10^4

  8. The TV screen in Pia's game room shows 0.35 × 10^5 points, but the first part is less than 1. How do you write the same number in scientific notation?

    3.5 × 10^4

  9. Ari's quiz card shows 6.1 × 10^-3. A star sticker waits for the right choice. Which number is equal to 6.1 × 10^-3?

    • 0.00061
    • 0.0061
    • -0.0061
    • 6100

  10. Bo's robot prints 9.2 × 10^-4 and waits. Only one choice matches it. Which number is equal to 9.2 × 10^-4?

    • -0.00092
    • 92,000
    • 0.00092
    • 0.000092