Arithmetic

For basic math questions about addition, multiplication, fractions, etc.
R
I need help with unit conversion from 'gCO2 eq/MJ' to 'gCO2 eq/tonne'
Replies
0
Views
418
Roders
R
T
Distance from a known line
Replies
3
Views
387
Otis
Otis
B
Find an unknown number
Replies
4
Views
576
PA3040D
P
N
how many zeros
Replies
5
Views
758
The Highlander
The Highlander
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
492
Dr.Peterson
Dr.Peterson
M
Is 4.56(with bar on top of 6) a rational or irrational number?
Replies
5
Views
755
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
1K
Jignesh77
J
S
Finding prime numbers using the "Petrov method"?
Replies
4
Views
668
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
701
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
838
galalao0001
G
J
I need help evenly splitting 6 of each of 20 items between 15 people each getting 8 items.
Replies
2
Views
464
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
653
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
592
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
636
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
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