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New posts in arithmetic
Why does every number of shape ababab is divisible by $13$?
elementary-number-theory
arithmetic
divisibility
Does the negative apply before or after an exponent
arithmetic
The structure of countable ordinals
set-theory
arithmetic
ordinals
Numbers from $1$ to $n$ are permuted such that the sum of any three consecutive numbers is divisible by the leftmost of them
number-theory
algorithms
arithmetic
divisibility
Turning a Piecewise Function into a Single Continuous Expression
functions
arithmetic
piecewise-continuity
Six of a kind .
arithmetic
recreational-mathematics
Identities like $4+5+6=7+8$ and $10^2+11^2+12^2=13^2+14^2$ and so on...
elementary-number-theory
arithmetic
recreational-mathematics
puzzle
computational-mathematics
If a finite set tiles the integers, must it be an arithmetic progression?
arithmetic
tiling
additive-combinatorics
What is the standard interpretation of order of operations for the basic arithmetic operations?
algebra-precalculus
arithmetic
faq
Reverse Engineer from digits sum
arithmetic
decimal-expansion
Is long division the most optimal "effective procedure" for doing division problems?
arithmetic
Recommend books for learning math from elementary school?
calculus
soft-question
arithmetic
What area of mathematics would the "24 game" encompass? [closed]
combinatorics
arithmetic
integer-partitions
combinatorial-game-theory
Why is it that $\frac ab\times\frac1c=\frac a{bc}$? [duplicate]
arithmetic
fractions
Building the integers from scratch (and multiplying negative numbers)
elementary-set-theory
arithmetic
Why do remainders show cyclic pattern?
algebra-precalculus
modular-arithmetic
arithmetic
Why do we invert then multiply when dividing fractions?
arithmetic
How can we define the notion of multiplication without numbers? [closed]
number-theory
arithmetic
What is this type of math notation called? (+ 4 5)
notation
arithmetic
Solving an equality with 3 equations, and 3 variables
systems-of-equations
arithmetic
quadratics
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