College Math Placement Practice Test

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Prepare for your College Math Placement Test with our expert-crafted quiz! Practice with diverse question formats and detailed explanations to enhance your math skills and boost your confidence.

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What is the value of 20 divided by 0.5?

The correct answer is: 40

To determine the value of 20 divided by 0.5, you can think of dividing by a fraction or a decimal as multiplying by the reciprocal. Dividing by 0.5 is the same as multiplying by 2, since 0.5 is equal to 1/2. When you perform the operation $ 20 \div 0.5 $, you are effectively calculating $ 20 \times 2 $. This yields a result of 40. Therefore, the correct answer reflects that dividing by a number less than 1 will yield a result that is greater than the original number, which aligns with the operation you performed. This method of understanding division by decimals can greatly aid in similar calculations in future problems.