Fast Mental Math
Geometry
Algebraic Manipulation
Word Problems**
Graphs
100
The number that is 16% of 25.
What is 4?
100
The value of the angle in red.
What is 80o?
100
The isolated form of T in the equation provided.
K=3/2kT
What is
T=(2K)/(3k)
100
Jim had 28 apples. He then gave away 4 of them. Afterwards he lost half of his apples so Jill gave him 3 apples. How many apples does Jim have now?
What is 15 apples?
100
The number of times the line x=3 intersects with the graph provided.
What is 3?
200
The value when 8 increased by 200%.
What is 24?
200
The value of z.
What is 120o?
200
The positive expression for r in the equation provided.
F_G=(Gm_1m_2)/r^2
What is
r=sqrt((Gm_1m_2)/(F_G))
200
If a car rental agency charges $50 to take the car out the door plus an additional $22 at the end of the day, this would be the y-intercept of the cost graphed versus time.
What is $50?
200
The number of times y=2x intersects with the equation provided on the graph.
What is twice?
300
A number increased by 20% is 216.
What is 180?
300
The measure of angle x
What is 112.5o?
300
Solve for x0 in the equation provided.
v^2=v_0^2+2a(x-x_0)
What is
x_0=x-(v_0^2-v^2)/(2a)
300
A chemist has 2L of solution that is 40% acetic acid. She also has a reservoir of acid that is 10%. How many liters should she add from the reservoir to the 2L of 40% solution to make a solution that is 15%?
What is 10 liters of solution?
300
When graphed, this equation makes this shape.
x^2+2x+y^2+5=17
What is a circle?
400
50 is this percent of 40.
What is 125%?
400
The area of the figure in terms of integers and
pi
What is
8pi+20?
400
Solve for 'x'.
x^2=sqrt(81)
What is
x=+-3
400
Lara is 84% the height of Brandon. If Paul is 25% taller than Lara and Brandon is 75 inches tall, how tall is Paul?
What is 78.75 inches?
400
The number of unique roots of the product of the two functions graphed.
What is 4?
500
163/5
as a decimal.
What is 32.6?
500
The area of a regular hexagon with a side measuring 6 cm.
What is
54*sqrt3 cm^2 ?
500
The provided equation shows the energy of an object that is launched from a spring on an elevated surface that eventually hits the ground at a certain velocity. If 'x' is the positive compression of the spring, solve for how far compressed the spring was.
1/2kx^2+mgh=1/2mv^2
What is
x=sqrt((m(v^2-2gh))/k)
500
It takes 3 painters 40 minutes to paint a small room and 5 painters 50 minutes to paint a big room. How many hours does it take for 7 painters to paint 5 small rooms and 6 big rooms?
What is 5 hours?
500
When graphing polynomials on the real plane, this is the amount of imaginary intercepts that can be observed.
What is 0?