Multiplying 4/5 by 8: Increase or Decrease?

Published on September 18, 2024

Pre-Algebra

This math problem asks whether multiplying 4/5 by 8 will result in a number greater than or less than 8. The solution explains that multiplying by a fraction less than 1 results in a smaller number, and calculates the product to be 6.4, confirming that it is less than 8.

Question

Give me the exact answer

Answer

To determine if the product of and 8 will be greater than or less than 8, let’s think about what it means to multiply by a fraction:
  • Multiplying by a whole number: Means you are taking groups of that number. For example, 3 x 8 means you have three groups of 8.
  • Multiplying by a fraction: Means you are taking a part of that number. Since the fraction is less than 1, we’re taking less than a whole group of 8.
Therefore, the product of and 8 will be less than 8.
Let’s calculate the answer: