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Test: Powers and scientific notation

Dynamic tasks on powers, exponent rules, order of operations, negative exponents and scientific notation. Includes comparison and mathematical-language comprehension.

Question qty: 10
Duration in minutes: 14
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Time left: 00:00:00

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Sample questions

  • Compare pirmas and antras. Which statement describes their relationship exactly?
  • Calculate: an.
  • Simplify: (am)n.
  • Calculate using the correct order of operations: an + b.
  • Simplify: am · an.
  • Simplify: am ÷ an.
  • Which expression is equal to a−n?
  • Write skaicius in scientific notation. Note: the first factor must be at least 1 and less than 10.

Powers and scientific notation

In aⁿ, a is the base and n gives the number of equal factors. When multiplying powers with the same base, add exponents; for division, subtract them; for a power raised to a power, multiply exponents.

Scientific notation

Write a number as a × 10ⁿ, where 1 ≤ |a| < 10. A positive exponent moves the decimal point right and a negative one moves it left. Check the sign of a negative number and the role of parentheses separately.

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