FTCE General Knowledge Math Practice Test

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Prepare for the FTCE General Knowledge Math Test with interactive quizzes and detailed explanations. This resource will enhance your math skills and boost your confidence before the exam. Conquer the test and excel in your teaching career!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the equivalent expression for 2 raised to the power of -3?

The correct answer is: 1/8

The expression for 2 raised to the power of -3 can be understood using the properties of exponents. When dealing with a negative exponent, the rule is that you take the reciprocal of the base raised to the positive exponent. Therefore, 2 raised to the power of -3 can be rewritten as 1 divided by 2 raised to the power of 3. Calculating that gives: 1 / (2^3) = 1 / 8 This shows that the equivalent expression for 2 raised to the power of -3 is indeed 1/8. The understanding of negative exponents is fundamental in mathematics, as it opens up the understanding of how numbers can be manipulated, especially in contexts involving fractions, ratios, or decaying values.