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KhanAcademyExercises

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New exercises from Khan Academy 2019-07-18T23:58:47.525422
Atualizado: 1 hora 41 minutos atrás

Rational number word problems

qui, 2019-07-18 23:58
Practice solving multi-step word problems. The numbers in these problems may be fractions, decimals, and percents.

Identify points on a line

qui, 2019-07-18 23:58
Identify the coordinates of points on a line and match a table of x- and y-coordinates to a line.

Find area with partial unit squares

qui, 2019-07-18 23:58
Count unit squares and partial unit squares to find the area of shapes.  

Volume by multiplying area of base times height

qui, 2019-07-18 23:58
Find the volume of a rectangular prism by multiplying the area of the base by the height of the figure. Measurements include fractions.

Order fractions

qui, 2019-07-18 23:58
Practice ordering 3 fractions from least to greatest. 

Signs of expressions

qui, 2019-07-18 23:58
Practice finding the signs of the answers to multiplication and division problems with positive and negative numbers.

Divide decimals like 16.8÷40 by factoring out a 10

qui, 2019-07-18 23:58
Dividing decimals where we can factor a 10 out of the divisor like 9÷30

Compare fractions and mixed numbers

qui, 2019-07-18 23:58
Practice comparing fractions and mixed numbers that have unlike denominators.

Rates & proportional relationships

qui, 2019-07-18 23:57
A variety of questions about rates and proportional relationships involving graphs, tables, and equations.

Scientific notation word problems

qui, 2019-07-18 23:57
Practice solving addition, subtraction, multiplication, and division problems involving scientific notation.

Testing solutions to inequalities

qui, 2019-07-18 23:57
Practice plugging in values to inequalities, like 2x<14, and checking to see if the inequalities hold true.

Two-step equations word problems

qui, 2019-07-18 23:57
Practice writing equations to model and solve real-world situations.

Match equations to coordinates on a graph

qui, 2019-07-18 23:57
Identify the coordinates that match a two-variable equation. Also, identify the corresponding equation when given  coordinates.

Tables from equations with 2 variables

qui, 2019-07-18 23:57
Complete a table and identify coordinates when given a two-variable equation, such as y=2x+4.

Comparing irrational numbers

qui, 2019-07-18 23:57
Practice comparing irrational numbers without using a calculator.

Select strategies for adding within 100

qui, 2019-07-18 23:56
Practice telling which strategies work for adding two numbers within 100.

Add & subtract rational expressions

qui, 2019-07-18 23:51
Example: Subtract and simplify (a-2)/(a+2) - (a-3)/(a²+4a+4).

Add & subtract rational expressions: factored denominators

qui, 2019-07-18 23:51
Example: Add and simplify x/(2x+1)(x-7) + 2x²/(2x-3)(x-7).

Add & subtract rational expressions: unlike denominators

qui, 2019-07-18 23:51
Add and subtract rational expressions with relatively prime denominators by manipulating them to have the same denominators.

Add & subtract rational expressions: like denominators

qui, 2019-07-18 23:51
Example: Add and simplify 6/(2x²-7) + (-3x-8)/(2x²-7).

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