Kit Library / Mathematics / Number Theory
Quick KitShared by a Veda learner · Generated with Veda AI
Veda Bites are swipeable micro-lessons — each one teaches exactly one idea. Here's a taste from this kit; the app has the full deck.
Quick checks without long division.
Divisibility rules are shortcuts to determine whether one integer divides another without performing full division. They are essential for simplifying fractions, finding factors, and solving problems in number theory.
↳ Divisibility rules turn tedious division into quick mental checks.
Exact division with no remainder.
An integer $a$ is divisible by an integer $b$ (where $b \neq 0$) if there exists an integer $k$ such that $a = b \times k$. In other words, dividing $a$ by $b$ leaves a remainder of $0$.
↳ Divisibility means the remainder is zero.
Check the last digit.
↳ For 2, 5, and 10, just look at the last digit.
Divisibility rules are quick mental shortcuts to determine if one integer divides another without performing full division. They rely on digit patterns, sums, or combinations of simpler rules, and are essential for prime...
~8 min · full explanation, examples & memory tricks in the app
16 questions laddered from warm-up to topper-level, each with an explanation. A taste:
Which of the following numbers is divisible by 2?
Beginner678
A number is divisible by 2 if its last digit is even. Only 678 ends in 8, an even digit.
Which number is divisible by 3?
Beginner342
Sum of digits of 342 is 3+4+2=9, which is divisible by 3. Others have sums not divisible by 3.
Which of the following is divisible by 4?
Beginner1124
A number is divisible by 4 if its last two digits form a number divisible by 4. 24 is divisible by 4, so 1124 is.
Which number is divisible by 5?
Beginner345
A number is divisible by 5 if its last digit is 0 or 5. 345 ends in 5.
18 flashcards in this kit — the app reviews them with spaced repetition so the right card returns on the right day.
The full Veda Bites deck, complete notes, spaced-repetition flashcards, leveled MCQs, tests and games for this kit — plus Daily Facts and the Arena, every day.
