Arithmetic

For basic math questions about addition, multiplication, fractions, etc.
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mmm4444bot
mmm4444bot
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.
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3
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101
galalao0001
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N
What are the last two digits of 2017^{2017}?
2
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32
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801
Steven G
Steven G
J
I need help evenly splitting 6 of each of 20 items between 15 people each getting 8 items.
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2
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54
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?
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7
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301
pka
pka
I
Problems from the very beginning 🤔 (Serge Langs Basic Math: 3 = - (-3) or 5 = - (-5))
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4
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170
Inkhole
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P
Need Help in Complete Division of 987654321 / 123456789
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7
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268
param-97
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N
Calculating a decreasing percentage?
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5
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148
Dr.Peterson
Dr.Peterson
L
Complete the Length x Width table (The confusing part is that the last rectangle is technically a square so...)
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6
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242
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]
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6
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158
menkoi
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L
Mum is 20 years older than Andrew and 24 years older than Anna. The three ages total 73.
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7
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333
LiseyDot05
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K
National Mathematics Day (in India)
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122
khansaheb
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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?
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6
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311
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?
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5
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228
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.
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2
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217
taytaytay
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C
Return the sum of numbers depending on number count?
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4
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203
topsquark
topsquark
S
Squaring negative values: (-13)^2 = (-13)*(-13) = +169, but what about -13^2 ?
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17
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509
stapel
stapel
L
Completing a mathematical table ("equation" is "2 X upside-down triangle = square")
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6
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256
LiseyDot05
L
L
Multiplying fractions: 1 1/2 + 1 1/2, and 9/10 divided by 27/20
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5
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339
Steven G
Steven G
J
Find the pattern and fill in the grid with decimal values
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6
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315
khansaheb
K
D
5th grade math: "The model shown represents a division equation."
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2
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558
Dr.Peterson
Dr.Peterson
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