# CBSE Class 8 Mathematics Worksheets/Part 1/ Yearly Examination.

**CBSE Class 8 Mathematics Worksheets is about some model questions that you can expect for yearly examination. Here you can find out practice problems for class 6 Mathematics.**

**CBSE CLASS 8 MATHEMATICS WORKSHEETS/Part 1/Yearly ExaminationModel Questions for Yearly ExaminationFill in the blanks:**

- If 3x + 5 = 20, then the value of x = ——————-
- A regular polygon with 4 sides is ——————
- The cube root of 216 is —————–
- The product of 4pq and 0 is —————-
- The volume of a cube with side 1.5 m is ————–
**Answer the following:** - Three angles of a quadrilateral are 38, 64 and 135 degrees. Find the measure of the fourth angle?
- 28% of 25 students are liked to play cricket. How many are liked to play cricket?
- Find the area of a rhombus whose diagonals are of lengths 10 cm and 12.4 cm?
- Solve 4x – 7 = 2(x – 2) + 7
- Find and correct the errors in the mathematical statement 2(x – 7) = 2x – 7

**ANSWERS:**

- 5
- Square/Rhombus
- 6
- 0
- 3.375 cubic metre
- The sum of the measures of the four angles of a quadrilateral is 360 degree.

Given measures are 38, 64 and 135 degrees.

The measure of fourth angle is 123 degree - Number of students liked to play cricket = 28% of 25

= 28 x 25/100

= 28/4 = 7 students - Area of a Rhombus = Half of the product of its diagonals.

Diagonals are given by 10 cm and 12.4 cm

Therefore, area = ½ (10 x 12.4) = ½ x 124 = 62 square cm - 4x – 7 = 2 (x – 2) + 7

4x – 7 = 2x – 4 + 7

4x – 2x = -4 + 7 + 7

2x = 10

x = 10/2 = 5 - 2(x – 7) = 2x – 14 is correct. We need to multiply two terms with in the bracket by 2.