Quiz 8th-Graders With These Math Word Problems
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Solving math problems can intimidate eighth-graders . It shouldn't. Explain to students that you can use basic algebra and simple geometric formulas to solve seemingly intractable problems. The key is to use the information you are given and then isolate the variable for algebraic problems or to know when to use formulas for geometry problems. Remind students that whenever they work a problem, whatever they do to one side of the equation, they need to do to the other side. So, if they subtract five from one side of the equation, they need to subtract five from the other.
The free, printable worksheets below will give students a chance to work problems and fill in their answers in the provided blank spaces. Once the students have completed the work, use the worksheets to do quick formative assessments for an entire math class.
Worksheet No. 1
Print the PDF : Worksheet No. 1
On this PDF, your students will solve problems such as:
"5 hockey pucks and three hockey sticks cost $23. 5 hockey pucks and 1 hockey stick cost $20. How much does 1 hockey puck cost?"
Explain to students that they'll need to consider what they do know, such as the total price of five hockey pucks and three hockey sticks ($23) as well as the total price for five hockey pucks and one stick ($20). Point out to students that they'll start with two equations, with each providing a total price and each including five hockey sticks.
Worksheet No. 1 Solutions
Print the PDF : Worksheet No. 1 Solutions
To solve the first problem on the worksheet, set it up as follows:
Let "P" represent the variable for "puck"
Let "S" represent the variable for "stick"
So, 5P + 3S = $23, and 5P + 1S = $20
Then, subtract one equation from the other (since you know the dollar amounts):
5P + 3S - (5P + S) = $23 - $20.
5P + 3S - 5P - S = $3. Subtract 5P from each side of the equation, which yields: 2S = $3. Divide each side of the equation by 2, which shows you that S = $1.50
Then, substitute $1.50 for S in the first equation:
5P + 3($1.50) = $23, yielding 5P + $4.50 = $23. You then subtract $4.50 from each side of the equation, yielding: 5P = $18.50.
Divide each side of the equation by 5 to yield:
P = $3.70
Note that the answer to the first problem on the answer sheet is incorrect. It should be $3.70 . The other answers on the solution sheet are correct.
Worksheet No. 2
Print PDF : Worksheet No. 2
To solve the first equation on the worksheet, students will need to know the equation for a rectangular prism (V = lwh, where "V" equals volume, "l" equals the length, "w" equals the width, and "h" equals the height). The problem reads as follows:
"Excavation for a pool is being done in your backyard. It measures 42F x 29F x 8F. The dirt will be taken away in a truck that holds 4.53 cubic feet How many truckloads of dirt will be taken away?"
Worksheet No. 2 Solutions
Print PDF : Worksheet No. 2 Solutions
To solve the problem, first, calculate the total volume of the pool. Using the formula for the volume of a rectangular prism (V = lwh), you would have:
V = 42F x 29F x 8F = 9,744 cubic feet
Then, divide 9,744 by 4.53, or:
9,744 cubic feet ÷ 4.53 cubic feet (per tuckload) = 2,151 truckloads
You can even lighten up the atmosphere of your class by exclaiming: "You are going to have to use quite a few truckloads to build that pool."
Note that the answer on the solution sheet for this problem is incorrect. It should be 2,151 cubic feet. The rest of the answers on the solution sheet are correct.
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Free Printable Math Word Problems Worksheets for 8th Class
Math Word Problems: Discover a vast collection of free printable worksheets for Class 8 students, created by Quizizz. Enhance your students' problem-solving skills and mathematical understanding with these comprehensive resources.
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Math Word Problems worksheets for Class 8 are an essential resource for teachers looking to challenge their students and help them develop critical thinking and problem-solving skills. These worksheets cover a wide range of topics, including algebra, geometry, and statistics, ensuring that students have a solid foundation in math. By incorporating real-life scenarios and engaging themes, these worksheets not only make math more relatable but also help students see the practical applications of the concepts they are learning. Teachers can easily incorporate these worksheets into their lesson plans, using them as supplementary material, homework assignments, or even as assessment tools. With a variety of difficulty levels and question types, Math Word Problems worksheets for Class 8 cater to the diverse needs of students and ensure that they are well-prepared for future math courses.
Quizizz is a fantastic platform that offers not only Math Word Problems worksheets for Class 8 but also a plethora of other resources for teachers to enhance their students' learning experience. With Quizizz, teachers can create interactive quizzes, polls, and presentations to engage students and make learning fun. The platform also allows teachers to track their students' progress and identify areas where they may need additional support. In addition to Math Word Problems worksheets for Class 8, Quizizz offers resources for other subjects and grade levels, making it a one-stop-shop for all your educational needs. The user-friendly interface and customizable features make Quizizz an invaluable tool for teachers looking to incorporate technology into their classrooms and provide their students with a dynamic and interactive learning experience.
Grade 8 Algebra Word Problems
These lessons cover some examples and solutions for algebra word problems that you will commonly encounter in grade 8.
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How to write algebra word problems into systems of linear equations and solve systems of linear equations using elimination and substitution methods?
Grade 8 Algebra Word Problems How to solve algebra word problems using systems of linear equations?
Example: Devon is going to make 3 shelves for her father. He has a piece of lumber 12 feet long. She wants the top shelf to be half a foot shorter than the middle shelf, and the bottom shelf to be half a foot shorter than twice the length of the top shelf. How long will each shelf be if she uses the entire 12 feet of wood?
Grade 8 Algebra Word Problems - Line Segments
Example: If JK = 7x + 9, JL = 114 and KL = 9x + 9. Find KL.
Grade 8 number word problems - common core How to write word problems into systems of linear equations and solve systems of linear equations using elimination and substitution methods?
Example 1: The sum of two numbers is 361 and the difference between the two numbers is 173. What are the two numbers?
Example 2: There are 356 Grade 8 students at Euclid’s Middle School. Thirty-four more than four times the number of girls is equal to half the number of boys. How many boys are in Grade 8 at Euclid’s Middle School? How many girls?
Example 3: A family member has some five-dollar bills and one-dollar bills in their wallet. Altogether she has 18 bills and a total of $62. How many of each bill does she have?
Example 1: A friend bought 2 boxes of pencils and 8 notebooks for school and it cost him $11. He went back to the store the same day to buy school supplies for his younger brother. He spent $11.25 on 3 boxes of pencils and 5 notebooks. How much would notebooks cost?
- A farm raises cows and chickens. The farmer has a total of 42 animals. One day he counts the legs of all of his animals and realizes he has a total of 114. How many cows does the farmer have? How many chickens?
- The length of a rectangle is 4 times the width. The perimeter of the rectangle is 45 inches. What is the area of the rectangle?
- The sum of the measures of angles x and y is 127". If the measure of angle x is 34° more than half the measure of angle y, what is the measure of each angle?
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3 Act Math Tasks for Grade
The following list of Real World Math Problems are aligned with the Grade 8 Mathematics Curriculum for Ontario .
Just Keep Digging
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Going In Circles!
Salting the Driveway
Shovelling the Driveway
Whirlpool Aero Car
Wooly Worm Race
Jugs of milk, refine your search.
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8TH GRADE MATH PROBLEMS WITH ANSWERS
Question 1 :
What is the smallest number by which 256 may be divided so that the quotient is perfect cube?
(A) 2 (B) 3 (C) 4
To find the number required to divide 256 such that the quotient is a perfect cube, we have to decompose 256 into prime factors.
Download Free 8th Grade Math Worksheets from Bytelearn.
Question 2 :
How many digits are there in the square root of 4456321?
(A) 2 digits (B) 4 digits (C) 3 digits
Square root of 1 digit and 2 digit number contains 1 digit.
Square root of 3 and 4 digit number contains 2 digits.
Square root of 5 and 6 digit number contains 3 digits.
Square root of 7 and 8 digit number contains 4 digits.
So, the square root of the given number has 4 digits.
Question 3 :
Find the value of 3x 3 + 4x 2 + x - 5 when x = -3.
(A) -53 (B) -71 (C) -32
Let f(x) = 3x 3 + 4x 2 + x - 5.
Substitute x = -3.
f(-3) = 3(-3) 3 + 4(-3) 2 + (-3) - 5
= 3(-27) + 4(9) - 3 - 5
= -81 + 36 - 3 - 5
Question 4 :
The perimeter of a rectangle is 52 cm. If its width is 2 cm more than one-third of its length, find the dimensions of the rectangle.
(A) 12 cm and 4 cm
(B) 18 cm and 8 cm
(C) 15 cm and 9 cm
Perimeter of a rectangle = 52 cm.
2(length + width) = 52 ==> l + w = 26
Let x be the length. The, w idth = x/3 + 2.
x + (x/3) + 2 = 26
[(3x + x)/3] +2 = 26
Width = 18/3 + 2
So, the required dimensions are 18 cm and 8 cm.
Question 5 :
What must be added to each of the numerator and the denominator of the fraction 7/11 to make it equal to 3/4.
(A) 9 (B) 5 (C) 12
Let x be the required number to be added to both numerator and denominator of the fraction.
(7 + x)/(11 + x) = 3/4
4(7 + x) = 3(11 + x)
28 + 4x = 33 + 3x
4x - 3x = 33 - 28
x = 5
So, 5 is the required number to be added to make the fraction 7/11 as 3/4.
Question 6 :
A line which intersects two or more lines at a distinct points is called a ____________
(A) concurrent (B) Intersecting (C) Transversal
A line which intersects two or more lines at a distinct points is called a concurrent.
Question 7 :
The opposite angles of a cyclic quadrilateral are _______________
(A) Supplementary (B) Complementary (C) None of these
The sum of opposite angles of a cyclic quadrilateral is 180 degree.
So, the answer is supplementary.
Question 8 :
In triangle ABC is inscribed in a circle with center O and BC is a diameter, if angle BAC is 50°, find angle ABC.
(A) 50° (B) 40° (C) 48°
In the right triangle ABC,
∠ A + ∠ B + ∠ C = 180 °
50 ° + ∠ B + 90 ° = 180 °
140 ° + ∠ B = 180 °
∠ B = 40
Question 9 :
The circumference of a circle is 44 cm. Find its area (use π = 22/7)
(A) 154 cm 2 (B) 130 cm 2 (C) 145 cm 2
Circumference of a circle = 44 cm
2 πr = 44
2 ⋅ (22/7) ⋅ r = 44
r = 7
Area of circle = πr 2
= (22/7) ⋅ (7) 2
= 154 cm 2
Question 10 :
The volume of a right circular cylinder is 1100 cm 3 and the radius of its base is 5 cm. Calculate its curved surface area.
(A) 410 cm 2 (B) 125 cm 2 (C) 440 cm 2
Volume of a right circular cylinder = 1100 cm 3
πr 2 h = 1100 cm 3
(22/7) ⋅ (5) 2 ⋅ h = 1100
h = 2/7
Curved surface area of cylinder = 2 πrh
= 2 ⋅ (22/7) ⋅ 5 ⋅ (2/7)
= 440 cm 2
So, the curved surface area of cylinder is 440 cm 2
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