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Mathematics · Class 8 · All

MathematicsClass 8AllMedium
Q1/14
45s

What is the value of 2x + 3 when x = 4?

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All 14 questions in this quiz
  1. Why is learning algebra important?

    1. It helps solve problems using patterns, variables, and logical reasoning.
    2. It is only useful for drawing shapes.
    3. It has no practical applications.
    4. It only involves memorising numbers.
  2. What is an equation?

    1. A statement showing equality between two expressions
    2. A drawing of a shape
    3. A number pattern only
    4. A type of fraction
  3. Which symbol is commonly used to represent an unknown number in algebra?

    1. x
    2. +
    3. =
    4. %
  4. Simplify: 9a - 4a

    1. 13a
    2. 5a
    3. 36a
    4. a
  5. What is the meaning of 4x?

    1. 4 + x
    2. 4 multiplied by x
    3. x divided by 4
    4. x minus 4
  6. Solve: 3x = 15

    1. 3
    2. 5
    3. 10
    4. 15
  7. Which pair represents like terms?

    1. 3x and 5x
    2. 3x and 5y
    3. x and x²
    4. 4a and 4b
  8. What is the value of 2x + 3 when x = 4?

    1. 8
    2. 10
    3. 11
    4. 12
  9. Which of the following is a constant term?

    1. 5x
    2. y
    3. 12
    4. 3a
  10. Find the value of x if x + 5 = 12.

    1. 5
    2. 6
    3. 7
    4. 8
  11. Simplify: 3x + 5x

    1. 8x
    2. 15x
    3. 8
    4. x²
  12. What is the coefficient of x in the expression 7x + 4?

    1. 4
    2. 7
    3. x
    4. 11
  13. In the expression 5x + 3, which is the variable?

    1. 5
    2. x
    3. 3
    4. +
  14. What is algebra mainly used for?

    1. Drawing pictures
    2. Finding unknown values using symbols and numbers
    3. Measuring only angles
    4. Counting objects only