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Khan Academy
Khan Academy: Area of a Circle
Find the area of a circle given its radius, diameter, or circumference. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Experimental Probability
Practice making reasonable estimates of the likelihood of future events based on past experience. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Comparing Probabilities
In this exercise, students practice comparing probabilities. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Simple Probability
Try these simple probability multiple-choice practice problems.
Khan Academy
Khan Academy: Experimental Probability
Practice problems with experimental probability.
Khan Academy
Khan Academy: Writing Expressions Word Problems
Practice words problems writing expressions.
Khan Academy
Khan Academy: Ratio Review
A basic review of ratios. Includes practice problems along with explanations of the solutions.