100 MATH QUESTION AND ANSWER FOR 8TH GRADE
Certainly! Here is a list of 10 math questions and answers for 8th grade. Feel free to ask for further clarification on any of them.
1. What is the value of x in the equation 2x + 3 = 15?
Answer: x = 6
2. Solve the following equation: 4(3x − 2) = 20.
Answer: x = 3
3. Simplify the expression: 7(x + 2) + 4(x − 3).
Answer: 11x - 10
4. Evaluate the expression: 3⁴
Answer: 81
5. Simplify the expression: (2³ + 5) ÷ 3
Answer: 9
6. If the circumference of a circle is 25π cm, what is its diameter?
Answer: The diameter is 25 cm.
7. Multiply: (2x² - 3)(4x + 1)
Answer: 8x³ + 2x² - 12x - 3
8. Solve for x: 9x - 6 = 3x + 15
Answer: x = 5
9. Find the mean of the numbers 5, 8, 12, and 7.
Answer: The mean is 8
10. Solve the following equation: 3/5x + 1/2 = 2/3x - 1/4
Answer: x = -4/7
If you would like more questions or have any specific topic in mind, please let me know!
Here are 10 math questions and their answers for 8th grade level. If you would like more questions, let me know!
1. Simplify the expression: 5x + 8y - (3x - 4y)
Answer: 2x + 12y
2. Solve the equation for x: 3(2x - 5) = 18
Answer: x = 4
3. Find the missing angle in a triangle where the other two angles measure 50° and 80°.
Answer: The missing angle measures 50° (the sum of the angles in a triangle is 180°.)
4. A rectangle has a length of 12 units and a width of 5 units. What is its perimeter?
Answer: The perimeter is 34 units.
5. Evaluate the expression: 4² - 3 × 5 + 2³
Answer: The answer is 14.
6. Solve the equation for y: 3y + 7 = 22
Answer: y = 5
7. Find the area of a circle with a radius of 4 units. (Use π = 3.14)
Answer: The area is 50.24 square units.
8. Simplify the expression: 2(x + 3) - 4x
Answer: -2x + 6
9. If a number is increased by 30% and then decreased by 40%, what is the overall percentage change?
Answer: There is a 12% decrease overall.
10. Solve the equation for x: -2(x - 3) + 5 = 7x + 4
Answer: x = -0.4