Daily Olympiad: Math - Algebraic Expressions [20260512]

Challenge yourself with today's CBSE practice! This test covers 'Algebraic Expressions' for Math (Grade 7). Level: Easy | Duration: 30 mins.

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1. What is the coefficient of 'x' in the expression 3x + 5y - 7?

Solution
Correct: A
The coefficient of a term is the numerical factor multiplying the variable. Here, '3' is the coefficient of 'x' in 3x.

2. How many terms are present in the expression 4x² + 3xy - y + 5?

Solution
Correct: B
The terms in the expression are 4x², 3xy, -y, and 5. This totals 4 terms.

3. Simplify the expression: 2a + 3a.

Solution
Correct: A
Combining like terms: 2a + 3a = (2 + 3)a = 5a.

4. Evaluate the expression 4x + 3 when x = 2.

Solution
Correct: A
Substitute x = 2: 4(2) + 3 = 8 + 3 = 11.

5. Simplify: (5x + 3) - 2x.

Solution
Correct: A
Subtract 2x from 5x to get 3x. The constant term remains 3.

6. Solve for x: 2x + 3 = 7.

Solution
Correct: A
Subtract 3 from both sides: 2x = 4. Divide by 2: x = 2.

7. Which expression represents 'three times a number x and five times another number y'?

Solution
Correct: A
The phrase translates to the sum of 3x and 5y.

8. Which term in the expression 5y² + 7y - 3 is a constant?

Solution
Correct: C
The constant term is a number not multiplied by a variable. Here, '-3' is the constant.

9. Identify the like terms from the following options.

Solution
Correct: A
Like terms have identical variables and exponents. 4x and 5x are like terms.