Arithmetic

For basic math questions about addition, multiplication, fractions, etc.
N
simplifying another surds: (sqrt(3 + sqrt(5 - sqrt(13 + sqrt(48))))) / (sqrt(6) + sqrt(2)
Replies
18
Views
2K
Dr.Peterson
Dr.Peterson
G
Please help with "If 100 items normally cost $300 but if I got 300 items I would get it for $800,..."
Replies
1
Views
552
Dr.Peterson
Dr.Peterson
M
Is 4.56(with bar on top of 6) a rational or irrational number?
Replies
5
Views
879
mario99
M
J
Fraction problem: "A boy baked a batch of cookies. only 1/3 of the batch was left after dinner...."
Replies
6
Views
2K
Jignesh77
J
S
Finding prime numbers using the "Petrov method"?
Replies
4
Views
734
Agent Smith
Agent Smith
K
National Mathematics Day (in India)
Replies
5
Views
1K
Agent Smith
Agent Smith
K
Basic percentage question
Replies
5
Views
796
Dr.Peterson
Dr.Peterson
G
Oscar wants to both spend and save the money he earns. For every $7 he puts in his wallet, he puts $3 in savings.
Replies
3
Views
940
galalao0001
G
J
I need help evenly splitting 6 of each of 20 items between 15 people each getting 8 items.
Replies
2
Views
526
Dr.Peterson
Dr.Peterson
A
Is there a formula or way to calculate which numbers we can divide a certain number to only produce non decimal numbers?
Replies
7
Views
1K
pka
pka
I
Problems from the very beginning ? (Serge Langs Basic Math: 3 = - (-3) or 5 = - (-5))
Replies
4
Views
760
Inkhole
I
P
Need Help in Complete Division of 987654321 / 123456789
Replies
7
Views
1K
param-97
P
N
Calculating a decreasing percentage?
Replies
5
Views
672
Dr.Peterson
Dr.Peterson
L
Complete the Length x Width table (The confusing part is that the last rectangle is technically a square so...)
Replies
6
Views
1K
Steven G
Steven G
M
how is this formula read in English?(oral) AD^2 = 8^2 + 4^2, AD = sqrt[8^2 + 4^2] = 3 sqrt[10]
Replies
6
Views
739
menkoi
M
L
Mum is 20 years older than Andrew and 24 years older than Anna. The three ages total 73.
Replies
7
Views
1K
LiseyDot05
L
L
If 8 people can do a certain job in 10 hours, how long would it take 20 people to do the same job, working at the same speed?
Replies
6
Views
1K
Steven G
Steven G
S
An easy one for this crowd: I want to add 29.07% to the number $36000. How much more is $36000 when 29.07% is added?
Replies
5
Views
644
Dr.Peterson
Dr.Peterson
T
A question about how to find percentages: I am trying to work out a percentage one number holds when added to another number.
Replies
2
Views
591
taytaytay
T
C
Return the sum of numbers depending on number count?
Replies
4
Views
726
topsquark
topsquark
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