Podcast
Questions and Answers
What is the purpose of the modulo operator (%) when applied to a number?
What is the purpose of the modulo operator (%) when applied to a number?
When using floor division (//) on the number 98765, what will the result be?
When using floor division (//) on the number 98765, what will the result be?
What effect does multiplying a number by 10 have on its digits?
What effect does multiplying a number by 10 have on its digits?
Study Notes
Extracting the Last Digit
- The modulo operator (%) finds the remainder when a number is divided by another.
- To get the last digit of a number (x), use
x % 10. - Example: 12345 % 10 = 5 (the last digit).
Removing the Last Digit
- Floor division (//) divides a number by another and rounds down to the nearest whole number.
- Removing the last digit from a number (x) involves
x // 10. - Example: 12345 // 10 = 1234 (the last digit 5 is removed).
Shifting Digits (Multiplying by 10)
- Multiplying a number by 10 shifts its digits one place to the left.
- This is useful when building a reversed number.
- Example: 3 * 10 = 30 (shifts the digit 3 from the ones place to the tens place).
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Description
This quiz covers essential mathematical concepts related to extracting, removing, and shifting digits in numbers. You will learn how to use the modulo operator and floor division effectively. Engage with practical examples to solidify your understanding.
