KhanAcademyExercises

Practice calculating the mean and standard deviation of geometric distributions.

Decipher vector, scalar, or nonsense from an expression involving the gradient, divergence, and curl.

Find the next term in a geometric sequence. The problems in this quiz involve relatively difficult calculations.

Practice calculating the mean and standard deviation of sampling distributions for differences in sample proportions, and use the large count condition to determine when these sampling distributions are approximately normal.

Graph quadratic functions given in the standard form ax²+bx+c. For example, graph y=5x²-20x+15.

Evaluate advanced logarithmic expressions by using the fact that a^x=b is equivalent to log_a(b)=x.

Practice choosing the best kinematic equation to solve one-dimensional motion word problems. 

Practice solving stoichiometry problems without a calculator in this set of free questions designed for AP Chemistry students.

Practice finding the critical value t* for some given confidence level.

3rd grade reading comprehension practice using realistic fiction

Understanding and solving problems with the formula for a finite geometric series

Solve a linear equation where the coefficients are represented by letters.

Practice finding a missing side length on a rectangle when given the other side length and the area.

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How much do you know about biological macromolecules?

Practice your understanding of how exchange rates change when economic conditions change.

This exercise provides practice for high school level concepts of pollination and fertilisation.

Given two functions, find the derivative of their composition.

Give the first few terms of a sequence, practice identifying recursive definitions with different indexes that produce the sequence.