8th Grade Math Worksheets with Answer Key

8th Grade Math Worksheets with Answer Key are a valuable resource for middle school students who are looking to enhance their math skills. These worksheets provide a variety of exercises and questions that focus on different mathematical topics, helping students better understand the concepts and practice their problem-solving abilities. With the accompanying answer key, students can independently check their work and grasp the subject matter with confidence.

  8th Grade Math Problems Worksheets

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  8th Grade Math Worksheets Algebra

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  Solving Equations Worksheets 7th Grade Math

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  8th Grade Math Practice Worksheets

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  8th Grade Math Worksheets Geometry

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  7th Grade Math Worksheets

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  8th Grade Math Worksheets

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  8th Grade Math Worksheets Printable

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  Algebra 1 Worksheets 9th Grade Math

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  Algebra 1 Worksheets

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  7th Grade Math Algebra Equations Worksheets

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  8th Grade Math Worksheets Printable

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  7th Grade Math Problems Worksheets

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  7th 8th Grade Math Worksheets

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  One Step Equations Worksheets

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  Algebra Math Worksheets Printable

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What is the value of the missing variable in the equation 3x + 5 = 14?

The missing variable in the equation 3x + 5 = 14 is x = 3.

How do you simplify the expression 4m + 3n - 2m + 5n?

To simplify the expression 4m + 3n - 2m + 5n, you first combine like terms by adding or subtracting coefficients of the same variable. In this case, we can add the coefficients of m and n separately. Adding 4m - 2m gives you 2m, and adding 3n + 5n gives you 8n. Therefore, simplifying the expression results in 2m + 8n.

What is the area of a rectangle with length 12 cm and width 6 cm?

The area of a rectangle is calculated by multiplying the length and width. In this case, the area of a rectangle with a length of 12 cm and a width of 6 cm would be 72 square centimeters (12 cm x 6 cm = 72 cm²).

How do you find the slope of a line that passes through the points (2, 5) and (4, 9)?

To find the slope of a line passing through two points, you use the formula: slope = (y2 - y1) / (x2 - x1). By plugging in the values of the points given, you get: slope = (9 - 5) / (4 - 2) = 4 / 2 = 2. Therefore, the slope of the line passing through the points (2, 5) and (4, 9) is 2.

What is the probability of rolling an even number on a standard six-sided die?

The probability of rolling an even number on a standard six-sided die is 3/6 or 1/2, since there are 3 even numbers (2, 4, 6) out of the total 6 possible outcomes.

How do you find the volume of a rectangular prism with dimensions 8 cm, 4 cm, and 5 cm?

To find the volume of a rectangular prism, you multiply its three dimensions together. So, for the rectangular prism with dimensions 8 cm, 4 cm, and 5 cm, you would calculate the volume by multiplying 8 cm x 4 cm x 5 cm, which equals 160 cubic cm. Therefore, the volume of the rectangular prism is 160 cubic cm.

What is the solution to the equation 2x - 7 = 5x + 3?

To find the solution to the equation 2x - 7 = 5x + 3, you need to isolate the variable x. By rearranging the equation, we get 2x - 5x = 3 + 7, which simplifies to -3x = 10. Dividing by -3 on both sides gives us x = -10/3. Therefore, the solution to the equation is x = -10/3.

How do you find the mean of a data set?

To find the mean of a data set, you add up all the values in the data set and then divide by the total number of values. This is also known as calculating the average. Simply put, sum all the numbers and then divide by the total count to find the mean.

What is the circumference of a circle with a radius of 6 cm?

The circumference of a circle with a radius of 6 cm is 37.7 cm.

How do you solve a system of linear equations using the substitution method?

To solve a system of linear equations using the substitution method, you first solve one of the equations for one variable in terms of the other variable. Then, you substitute this expression into the other equation to find the value of the other variable. Finally, you substitute the value of that variable back into either of the original equations to solve for the remaining variable. This method allows you to find the values of both variables in the system of equations.