Introduction Quiz - CBSE Class 7 Mathematics

Free practice quiz: Introduction (CBSE Class 7 Mathematics). 30 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is the value of the expression 3x + 2 for x = 1?

   1. 3
   2. 5
   3. 6
   4. 2
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   Answer: B. 5

   Substituting x = 1 into 3x + 2 gives 3(1) + 2 = 3 + 2 = 5.

2. What is the degree of the polynomial 5x^3 + 4x^2 + 2?

   1. 3
   2. 2
   3. 1
   4. 0
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   Answer: A. 3

   The degree of a polynomial is the highest power of the variable. The highest power in 5x^3 is 3.

3. What is the value of x in the equation 2x + 3 = 11?

   1. 3
   2. 2
   3. 4
   4. 5
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   Answer: C. 4

   Subtract 3 from both sides to get 2x = 8, then divide by 2; x = 4.

4. Identify the like terms in the list: 3y, 5x, 7y, 9.

   1. 3y and 7y
   2. 5x and 9
   3. 3y and 5x
   4. All terms are like
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   Answer: A. 3y and 7y

   Like terms have the same variable raised to the same power. Here, 3y and 7y both have the variable y.

5. Which expression is equal to 15 - 5y?

   1. 5(3 - y)
   2. 15/y
   3. 15y - 5
   4. 5(y - 3)
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   Answer: A. 5(3 - y)

   The expression 5(3 - y) is equivalent to 15 - 5y using the distributive property.

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