If the cube of a number is 125, what is the number?

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Question: If the cube of a number is 125, what is the number?

Options:

Correct Answer: 5

Solution:

The cube root of 125 is 5, since 5 * 5 * 5 = 125.

If the cube of a number is 125, what is the number?

If the cube of a number is 125, what is the number?

Step 1: Understand that 'the cube of a number' means multiplying that number by itself three times.
Step 2: Write the equation: If x is the number, then x * x * x = 125.
Step 3: To find the number, we need to find the cube root of 125.
Step 4: The cube root of a number is the value that, when multiplied by itself three times, gives that number.
Step 5: Calculate the cube root of 125. We can try different numbers: 1, 2, 3, 4, and finally 5.
Step 6: Check if 5 works: 5 * 5 * 5 = 125.
Step 7: Since 5 * 5 * 5 equals 125, we conclude that the number is 5.

Cube and Cube Root – Understanding the relationship between a number and its cube, as well as how to find the cube root.