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KwickClips Python · 41 sec · free

What does num % 10 give?

Short answer. The last digit.

What does num // 10 do?

Drops the last digit.

Remember

% 10: last digit
// 10: drop last digit
Guessing game: while plus break

Can maths alone reverse a number? Yes. Modulus ten gives the last digit. Floor division by ten removes it. Adding digits gives the digit sum. Modulus ten gives the last digit. Floor division drops it. Guessing uses while with break.

This clip is from the full lesson: while Loop, break and continue — 8 minutes, with the tables, the quick answers and the whole lesson in text.

Useful for: CBSE Class 10 Computer Applications (165), CBSE Class 11 Computer Science (083), CBSE Class 11 Computer Science Essentials (083), CBSE Class 11 Informatics Practices (065)

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