Oct 23, 2025 · 7 It is a pretty common mental arithmetic trick to take the two numbers you're multiplying, rounding them, multiply the rounded numbers, then correct for the rounding. That …

Greatest common divisors and modular arithmetic. Ask Question Asked 9 years, 10 months ago Modified 9 years, 10 months ago

Arithmetic could roughly be described as working with the numbers we know within a particular system of numbers, and is often related in some way to working with things called integers …

My daughter is stuck on the concept that $$2^0 = 1,$$ having the intuitive expectation that it be equal to zero. I have tried explaining it, but I guess not well enough. How would you explain the

Nov 15, 2015 · How to multiply Roman numerals? I need an algorithm of multiplication of numbers written in Roman numbers. Help me please.

6 The terms boolean, binary, and bitwise arithmetic are all equivalent in my mind. However, it is most commonly referred to as binary arithmetic in my experience. Boolean algebra however is …

That lead me to wonder how one would deal with more complex problems involving modulo arithmetic. I know several rules for reducing equations involving all sorts of operators from …

Jul 8, 2015 · Recently my colleague ask one mathematical question which is, What is the quotient and remainder of $(-29)/7$? and my answer was that quotient is $4$ and remainder is $-1$ …

Modular arithmetic (clock arithmetic) is a system of integer arithmetic based on the congruence relation $a \equiv b \pmod {n}$ which means that $n$ divides $a-b$.

Thanks to everyone who contributed. This is elementary school and I'm fairly convinced now that the answer they want is a mixed fraction. Reading the answers reminded me that I was used …