Class 8th CBSE is a very important stage in the development of fundamentals of a student. As the basics of Maths and Science help students to understand complex topics which will come in 9th standard. Most of the subjects in class 8 are vast, where some of them require not only memorization but also requires skill. One such is the subject of Mathematics, which seems to be a nightmare for students and requires a lot of practice to boost confidence. So we at CoolGyan’S provide students of Class 8 with important 2 marks question, which can be beneficial for them in their examination.
Students preparing for CBSE Class 8 Maths Examination are advised to practice the given question for Mathematics:
Important 2 Marks Questions for Class 8 Maths CBSE Board are as follows-
Question 1- Select those which can be written as a rational number with denominator 4 in their lowest form:
(frac{7}{8},frac{64}{16},frac{36}{-12},frac{-16}{17},frac{5}{-4},frac{140}{28})
Question 2- Using suitable rearrangement and find the sum:
- a) (frac{4}{7}+left (frac{-4}{9} ight )+frac{3}{7}+left (frac{-13}{9} ight ))
- b) -5 + (frac{7}{10}+frac{3}{7}+(-3)+frac{5}{14}+frac{-4}{5})
Question 3- Following are the number of members in 25 families of a village:
6, 8, 7, 7, 6, 5, 3, 2, 5, 4, 3, 3, 2, 5, 6, 8, 7, 7, 4, 3, 6, 6, 6, 7, 5.
Make a frequency distribution table for the data using class intervals 0 – 2, 2 – 4, etc.
Question 4- 13 and 31 is a strange pair of numbers such that their squares 169 and 961 are also mirror images of each other. Can you find two other such pairs?
Question 5- Three numbers are in the ratio 2 : 3 : 4 . the sum of their cubes is 0.334125. Find the numbers.
Question 6- A steamer goes downstream and covers the distance between two ports in 5 hours while it covers the same distance upstream in 6 hours. If the speed of the stream is 1 km/hr, find the speed of the steamer in still water.
Question 7- Sum of the digits of a two-digit number is 11. The given number is less than the number obtained by interchanging the digits by 9. Find the number.
Question 8- A playground in the town is in the form of a kite. The perimeter is 106 meters. If one of its sides is 23 meters, what are the lengths of the other three sides?
Question 9- In the parallelogram given below YOUR, (angle RUO=120^{circ}) and OY is extended to point S such that (angle SRY=50^{circ}) .Find (angle YSR)
Question 10- A polyhedron has 20 faces and 12 vertices. Find the edges of the polyhedron.
Question 11- In a town, an ice cream has displayed ice cream sculpture of height 360 cm. The ice cream parlour claims that these ice creams and the sculpture are in the ratio 1 : 30. What is the height of the ice creams served?
Question 12- Factorize the following:
- a) (x^{2}) + 15x + 26
- b) (x^{2}) = 17x +60
Question 13- The area of the square is given by (4x^{2}) + 12xy + (9y^{2}) . Find the side of the square.
Question 14- Express as power of a rational number with negative exponent.
- a) (left ( left ( frac{-3}{2} ight )^{-2} ight )^{-3})
- b) ((2^{5}div2^{8}) imes 2^{-7})
Question 15- By what number should (left ( frac{-3}{2} ight )^{-3}) be divided so that the quotient may be (left ( frac{4}{27} ight )^{-2}) ?
Question 16- Jyothi bought a product for Rs. 3,155 including 4.5% sales tax. Find the price before tax was added.
Question 17- Archana bought medicines from a medical store as prescribed by her doctor for Rs. 36.40 including 4% VAT. Find the price before VAT was added.
Question 18- The variable x varies directly as y and x = 80 when y is 160. What is y when x is 64?
Question 19- Gogi types 108 words in 6 minutes. How many words would she type in half an hour?
Question 20- The walls and ceiling of a room are to be plastered. The length, breadth and height of the room are 4.5 m, 3 m and 350 cm respectively. Find the cost of plastering at the rate of Rs 8 per (m^{2}) .
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