New posts in arithmetic

Why can we multiply by breaking up the factors as sums in different ways?

algebra-precalculus arithmetic

What is $\frac{9}{3} - \frac{1}{2}$?

arithmetic fractions

What does multiplication mean in probability theory?

probability statistics arithmetic

How many adjacent edges in an $n \times n$ grid of squares?

combinatorics arithmetic

Is there a knock down argument showing that , in arithmetics, equality means identity?

soft-question arithmetic relations

Prove that all even integers $n \neq 2^k$ are expressible as a sum of consecutive positive integers

elementary-number-theory arithmetic

How to avoid arithmetic mistakes?

arithmetic

What combinatorial quantity the tetration of two natural numbers represents?

combinatorics arithmetic exponential-function tetration hyperoperation

Sum of the sum of the sum of the first $n$ natural numbers

arithmetic problem-solving

Finding number $n$ times larger then a given negative number

arithmetic

For which values of $a$ does $a-2 \mid a^3+4$ [closed]

elementary-number-theory arithmetic divisibility

Divisibility is transitive: $\ a\mid b\mid c\,\Rightarrow\ a\mid c$

arithmetic divisibility

How can I find the square root using pen and paper?

algorithms arithmetic radicals

Proof of dividing fractional expressions

arithmetic fractions

Is $2^k = 2013...$ for some $k$? [duplicate]

elementary-number-theory modular-arithmetic arithmetic exponentiation decimal-expansion

What is the purpose of Stirling's approximation to a factorial?

arithmetic asymptotics approximation factorial

Mathematical joke regarding three people leaving a house [closed]

arithmetic recreational-mathematics

Logic behind dividing negative numbers

arithmetic fractions

The number $(3+\sqrt{5})^n+(3-\sqrt{5})^n$ is an integer

algebra-precalculus elementary-number-theory arithmetic induction

Explaining to a kid why a negative × negative = positive? [duplicate]

abstract-algebra algebra-precalculus arithmetic education faq