Arithmetic

For basic math questions about addition, multiplication, fractions, etc.
S
Squaring negative values: (-13)^2 = (-13)*(-13) = +169, but what about -13^2 ?
Replies
17
Views
2K
stapel
stapel
L
Completing a mathematical table ("equation" is "2 X upside-down triangle = square")
Replies
6
Views
944
LiseyDot05
L
L
Multiplying fractions: 1 1/2 + 1 1/2, and 9/10 divided by 27/20
Replies
5
Views
2K
Steven G
Steven G
J
Find the pattern and fill in the grid with decimal values
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6
Views
1K
khansaheb
K
D
5th grade math: "The model shown represents a division equation."
Replies
2
Views
4K
Dr.Peterson
Dr.Peterson
R
Please help with this fractions question...
Replies
5
Views
1K
Raanikeri
R
T
Percentage Business Question: Share change for a brand on total country level is lower than any of its constituent channels
Replies
5
Views
723
blamocur
blamocur
M
Please Help me to find the following 11x11 Matrix Number Formula
Replies
5
Views
1K
stapel
stapel
P
  • Locked
The club has 53 members. 5/3 of girls, 3/5 of boys are from
2
Replies
36
Views
7K
stapel
stapel
H
Percentage question: If something increase by the same percentage each day and is at 6.09 percent higher after 2 days.
Replies
7
Views
855
The Highlander
The Highlander
Y
How to solve: finding gender pay gap from men's average pay and formula
Replies
1
Views
710
stapel
stapel
T
Farmland Maths problem
Replies
10
Views
2K
stapel
stapel
L
Angles - what is the smaller angle?
Replies
9
Views
1K
LiseyDot05
L
S
Rounding number to nearest ao that is exactly divisible by 12 & 1000, split 80-20 w/o decimals
Replies
2
Views
625
Dr.Peterson
Dr.Peterson
L
Area: "Here is a plan of our bathroom; on the drawing, 2cm equals 1m."
Replies
15
Views
2K
Dr.Peterson
Dr.Peterson
L
Math Puzzle Basic Arithmetic: We have 4 numbers which are 2/5/9/11....
Replies
7
Views
1K
Steven G
Steven G
H
Assumption: a can work in 10 days.B can work in 15.so the days in which both will finish are 6.
Replies
1
Views
691
Dr.Peterson
Dr.Peterson
L
Area of a shape: find area of gray triangle inside square
Replies
15
Views
2K
khansaheb
K
C
How many square rug of 17cm by 17cm is needed for a square room of size 4.2m?
Replies
9
Views
1K
Dr.Peterson
Dr.Peterson
C
Word problem concerning fraction: "A mobile telecommunications company charges 15 k/sec to encourage..."
Replies
3
Views
1K
The Highlander
The Highlander
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