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New exercises from Khan Academy 2020-01-24T19:14:35.042586
Updated: 1 hour 57 min ago

### Translate expressions with parentheses

Thu, 2019-10-31 23:00
Practice using parentheses to change expressions from written form to number form.

### Area & perimeter of rectangles word problems

Thu, 2019-10-31 22:58
Find the missing side length of a rectangle when given its perimeter or area.  Compare perimeters and areas of rectangles.

### Interpret multiplying fraction and whole number word problems

Thu, 2019-10-31 22:57
Solve word problems involving multiplication of a fraction by a whole number.  Then interpret the solution by, for example, determining between which two whole numbers the solution falls.

### Logic circuits

Thu, 2019-10-31 22:18
Check your understanding of how simple logic circuits of AND/OR/NOT gates can output 0 or 1 based on inputs, in this set of free practice questions designed for AP Computer Science Principles students.

### The production function

Thu, 2019-10-31 16:48
Practice what you have learned about the production function in this exercise.

### Short-run production costs: foundational concepts

Tue, 2019-10-29 16:19
Practice what you have learned about the difference between marginal cost, average variable cost, and fixed costs in this exercise.

### Culture from 1945 to 1960

Mon, 2019-10-28 21:44
Test your skills on the development and the responses to mass culture!

### Sample spaces for compound events

Mon, 2019-10-28 21:00
Practice checking if sample space diagrams match a compound event.

### Negative number addition and subtraction: word problems

Mon, 2019-10-28 20:44
Practice solving word problems with negative numbers.

### The end of the Cold War

Mon, 2019-10-28 20:30
Test your skills on the causes and effects of the end of the Cold War!

### Reagan and conservatism

Mon, 2019-10-28 19:59
Test your skills on the rise of debates about the role of government in the 1980s!

### Coordinate plane word problems (quadrant 1)

Mon, 2019-10-28 17:50
See how we can use the axes on the coordinate plane to represent quantities.

### Dividing decimals: hundredths

Mon, 2019-10-28 17:33
Divide two numbers.  Divisors, dividends, and quotients include decimals written to the tenths or hundredths place.  This exercise uses the standard algorithm to find the quotient.

### Motion along a curve (differential calc)

Mon, 2019-10-28 16:57
Solve problems that involve motion along a curve defined by a two-variable equation.

### Intercepts from a table

Mon, 2019-10-28 16:57
Find the intercepts of a line given a table of values.

### Tangents to polar curves

Mon, 2019-10-28 16:44
Practice tangent lines of functions defined with polar coordinates.

### Describing graphs

Mon, 2019-10-28 10:51
Tests terminology.

### Selection and genetic drift

Mon, 2019-10-28 10:33
Test your knowledge on selection and genetic drift!

Fri, 2019-10-25 20:14
Practice interpreting what the features of a graph representing a quadratic relationship mean in terms of a given context.

### Ratio tables

Fri, 2019-10-25 16:31
Practice filling out tables of equivalent ratios.