KhanAcademyExercises
New exercises from Khan Academy
2020-07-10T10:07:15.000000
Atualizado: 5 horas 15 minutos atrás
Identifying carbon reactions
Let's practice identifying the four types of carbon reactions by knowing the chemical properties of carbon.
Inflection points intro
Analyze the points of inflection of a function given the function's graph.
Spectroscopy and the electromagnetic spectrum
Check your understanding of molecular and electronic transitions in this set of free practice questions designed for AP Chemistry students.
Using Le Chatelier's principle
Practice using Le Chatelier's principle to predict what happens to a reaction when a stress is applied
Basic cell structures
Test your knowledge on the structures of cells!
The Progressives
Test your knowledge on the twentieth-century progressive movement!
Word problems: Solving quadratic equations
Let's solve some word problems involving quadratic equations.
Concavity intro
Practice your understanding of concavity.
Finding definite integrals using algebraic properties
Properties of integrals practice problems
Definite integrals over adjacent intervals
Practice your understanding of definite integral properties: integrating sums of functions, and taking the integral of a function multiplied by a constant.
Simplify square-root expressions
Practice simplifying expressions with multiple radical terms.
Connecting f, f', and f'' graphically
Identify which of three given graphs describes a function, which describes the function's first derivative, and which describes the function's second derivative.
General triangle word problems
Solve word problems that involve general triangles using trigonometry.
Estimate derivatives
Given a table of values of a function, find the best estimate for the derivative of a function at a given point.
Secant lines & average rate of change
Find the average rate of change of a function, or the slope of a secant line to the graph of the function.
Pantheon
Test your knowledge.
Break apart 2-digit addition problems
Practice breaking apart problems like 23+45 into problems like 20+40+3+5.
Place value blocks within 1,000
Practice using place value blocks to represent numbers within 1000.
Unit rates
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?
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