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Class 7 - Maths - Algebraic Expressions

- Practice Sheet

**Q1. Classify as monomial, binomial and trinomial.**

(a) x - x² + x³

(b) -26ab

(c) -7p²q -7pq²

(d) -27a² -125b²

(e) 2978

**Q2. Form algebraic expressions from the following statements.**

(a) Sum of the terms 5x and (-9y)

(b) Sum of the squares of 4 and x

(c) Product of a and b added to the sum of y and 20.

(d) Two times number 9 is subtracted from the product of y and z.

**Q3. Simplify and write:**

(a) 7x³ -6xy -18x² + yx

(b) 16xy - 3(x - xy)

(c) 9x²y + yx² + 8xy - 9yx² + 3xy

(d) (z + 3) - (z - 3) + (z - 6)

**Q4. Find the value of each of the following expression if x = 2, y = 3 and z = 1**

(a) x – y + z

(b) x² + y² + z²

(c) 2x + y² – z² + 3

**Q5. Subtract the sum of 2x +3y +5z and -3x – y – 2z from the sum of 3x – 2y + z and 2x + 2y +3z**

**Q6. Form the expressions from the following statements:**

(a) The sum of a number and 12 is 27.

(b) Half of a number is 19.

(c) Three times a number plus 10 is 97.

(d) Twice the sum of a number and 5 is 12.

(e) Ten less than twice the number is 86.

**Q7. Check the solution of the following equations:**

(a) 3x - 14 = 16, x = 10

(b) 4(2y + 1 ) = 36, y = 6

(c) 12a + 4 = 40, a = 2

(d) 3(2x - 1) + 5 = 14, x = 2

Very typical and good questions

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