COMPUTATION
AMC
ALGEBRA
GEOMETRY
HISTORY
100
1+1-1+1-1
1
100
To make this statement true, the question mark between the 6 and the 3 should be replaced by? (1999 AMC8, Problem 1)
A
100
3x=2
2/3
100
AREA OF A TRIANGLE (use b,h)
bh/2
100
who invented pythagorean theorem
pythagoras
200
SIMPLEST RADICAL FORM:
sqrt(67+41)
6sqrt(3)
200
What is the value of 
?
E
200
4x+56=67 DECIMAL
2.25
200
AREA OF A ISOSCLES RIGHT TRIANGLE (USE L for leg)
L^2/2
200
Who invented pi
Archimedes
300
67^2 in scientific notation
4.489*10^3
300
Eleven members of the Middle School Math Club each paid the same amount for a guest speaker to talk about problem solving at their math club meeting. They paid their guest speaker 
. What is the missing digit 
of this 
-digit number?(2014 AMC 8, Problem 8)
D
300
5x+2y=(sqrt(2)y)^2
0
300
AREA OF REGULAR HEXAGON(use s for side length)
3sqrt(3)*s^2
300
Full name of Heron
Heron of Alexandria
400
108*55
5940
400
Andy and Betsy both live in Mathville. Andy leaves Mathville on his bicycle at 
, traveling due north at a steady 
miles per hour. Betsy leaves on her bicycle from the same point at 
, traveling due east at a steady 
miles per hour. At what time will they be exactly the same distance from their common starting point?(2025 AMC 12A, Q1)
E
400
4x^2=16
2,-2
400
AREA OF A TRIANGLE (use a,b,c for three side lengths)
A=s(s−a)(s−b)(s−c)where
s=(a+b+c)/2
.
400
Who invented omega
Gregory Chaitin
500
sqrt(2) to 5 decimal places
1.41421
500
Suppose that 
is the product of three consecutive integers and that is divisible by 
. Which of the following is not necessarily a divisor of ?(2001 AMC 10A, Problem 12.)
D
500
67x=68-68^2
-68
500
AREA OF A regular 7-sided polygon.
A=7/4 *s^2*cot(180/7)
500
Full name of REIMMAN
Bernhard Reimman