KhanAcademyExercises

Test your knowledge.

Practice breaking apart problems like 23+45 into problems like 20+40+3+5.

Practice using place value blocks to represent numbers within 1000.

Find the unit rate for two quantities. For example, if you spend 70 dollars on 8 movie tickets, how much does one movie ticket cost?

Simplify algebraic expressions by combining like terms. Coefficients on some terms are negative.

Let's try to express some real-world scenarios using quadratic equations

Practice identifying medians and altitudes in triangles.

Analyze graphs of functions to determine where they are not differentiable.

Plotting pie charts

Practice adding numbers like 554 and 237 using a number line.  All numbers are less than 1000.

Practice programming with string operations like concatenation and substring in the AP CSP pseudocode, in this set of free practice questions designed for AP Computer Science Principles students.

A check for understanding of the Teaching remotely with Khan Academy lesson.

A check for understanding of the Implementing Khan Academy with students lesson.

A check for understanding of the Using assignments to support mastery learning lesson.

A check for understanding of the Using course mastery on Khan Academy lesson.

A check for understanding of the Setting up your Khan Academy teacher account lesson.

A check for understanding of the Getting to know Khan Academy lesson.

This exercises assesses student's understanding of structure and function of excretory system at an elementary level.

Let's practice some problems to better understand the concept of relative refractive indices of different optical media.

Let's practice problems to figure out various optical distances in experiments with lenses, using just ray diagrams.