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Mathematics Stack Exchange

Questions tagged [arithmetic]

Questions on basic arithmetic involving numerical quantities only. Questions involving variable values (other than the result of the operation) should be placed under the (algebra-precalculus) tag. Questions about number theory (sometimes called "arithmetic") should not use this tag and should instead use (number-theory) or (elementary-number-theory).

Arithmetic is defined as operations upon numbers using $4$ main operations along with many others:

addition - the sum of two numbers

subtraction - the difference of two numbers also defined as the addition of negative numbers

multiplication - the area of a rectangle with sides of lengths equal to the two operands

division - the number of times one number can be subtracted from another before equaling zero. Sometimes it will allow decimals and in other cases there will be a remainder left over when a number doesn't go into another evenly

See Arithmetic.

6283 questions
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when dividing with demical numbers, what do i do with the remainder?

Here is the problem. 90.327 divided by 0.08 What i have completed so far for the answer is 1129. But i cant understand how to complete it because the remainders are so difficuilt. Please show me how to solve the rest. I really want to understand but…
Bernadette Aragon
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A question about my exam

Need help for my exam "If a product is sold for 2500 euros, then the loss would be 8%. How much should the product be sold to reach 8% profit?"
Milingona Ana
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Calculate minimum value based on constraints

This seems like a bit of a simple question in amongst all the 'proper' maths, but I'm a bit rusty... If I have the following constraints: $$ A = c(T - x) $$ $$ x - A > 0 $$ $$ 0 < c < 1 $$ I don't think that there is a way to calculate the minimum…
Paddy
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Negative base conversion and converting back..

I am looking at https://en.wikipedia.org/wiki/Negative_base as a reference for converting base 10 to base -3 example. Converting back from -3 base to base 10 does not yield the same result. The example under calculation does not make sense: (146)…
Gunjan Jain - MSFT
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What is twice as warm as 42 degrees?

A friend once noted that the temperature had doubled from morning to afternoon, from 42 degrees to 84 (Fahrenheit; this was in the U.S.). I didn't contradict her, but thought to myself that wasn't really true, because the actual doubling of 42…
B. Clay Shannon-B. Crow Raven
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help please dividing surds

Can anyone explain how I simplify $$5\frac{\sqrt{44}}{\sqrt{66}}$$ thanks
jack Skye
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1-999 inclusive (how many written between 1-999)

A person wrote down all numbers from 1 to 999 inclusive. How many times was the digit 8 written? I'm not sure how to approach this one... Should I group these into 100's and add up... Or is there a more simple approach to this? Thanks! P.S: Wasn't…
Aaron Carn
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The number of positive integers which divide 2004 to leave a remainder of 24

What is the number of positive integers that, when $2004$ is divided by them, leave a remainder of $24$? A. $036$ B. $020$ C. $022$ D. $021$ E. $014$
user6625
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Bodmas question.

Someone told me that the answer to 100 - 26 ÷ 2 + 8 was 95 (not 79 which is what I thought it was). Could they be right?
Richard Sewell
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Word Problem: If it rained 3.3 inches in a day. How much Did it rain within 4 hours+

I do not know how I should do this. Should I divide 3.3 into 4 hour or make a conversion factor such as 3.3/24hrs x 1hr/60min and then multiply the min by 4?
Geology
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Practice test - simplifying expressions

another question I am stuck on in a practice test. The question is $$\frac{5^{2011} - 5^{2009} +24}{ 5^{2009} +1}$$ Can you cancel out the $5^{2009}$ or not?
Nicole Carr
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How many digits does the number $3.00435\times 10^9+0.00002 \times 10^{-53}$ have?

How many digits does the number $$3.00435\cdot10^9+0.00002\cdot10^{-53}$$ have? Can anyone help to find this? Thanks
Joyce
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Order Of Operation- Does the order matter..

The BODMAS rule states that while solving any given mathematical expression we first solve it in this manner- (i) Brackets (ii) Orders or powers (iii) Division (iv) Multiplication (v) Addition and at last we solve (vi) subtraction I get that…
MartianCactus
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need arithmetic problem proof

if $a^2+b^2=a^3+b^3=a^4+b^4$ find a and b
Sollace477
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$A$, $B$ and $C$ can do a ...

$A$, $B$ and $C$ can do a piece of work in $30$, $40$ and $50$ days respectively. If $A$ and $B$ work in alternate days started by $A$ and they get the assistance of $C$ all the days, find in how many days the whole work will be finished? My…
pi-π
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