# Tag Archives: NCERT Solutions Class-8

Question 1. Express the following numbers in standard form: (i) 0.0000000000085 (ii) 0.00000000000942 (iii) 6020000000000000 (iv) 0.00000000837 (v) 31860000000 Solution: (i) 0.0000000000085 = 85/10000000000000 =… Read More
We use cross multiplication in this exercise a lot of times, so it is explained here before. Let, a/b = c/d Now if we multiply… Read More
Question 1. Find the value of x : 3x = 2x + 18 Solution: 3x – 2x =18 (transposing 2x to LHS) X = 18… Read More
Chapter 9 Algebraic Expressions and Identities – Exercise 9.5 | Set 1  Question 5. Show that: (i) (3x + 7)2 – 84x = (3x –… Read More
Question 1. State whether True or False. (a) All rectangles are squares.  Answer: False, In square all sides are equal, but in rectangle length and… Read More
Question 1. List the outcomes you can see in these experiments. (a) Spinning a wheel (b) Tossing two coins together Solution: (a) Since, there are… Read More
Question 1. Find the product of the following pairs of monomials. Monomial: Expression containing only one term (i) 4, 7p  Ans:   (4) * (7p) =… Read More
Construct the following quadrilaterals: Quadrilateral MOREMO = 6 cm, ∠R = 105°, OR = 4.5 cm, ∠M = 60°, ∠O = 105°  Quadrilateral PLANPL =… Read More
Question 1. Find the cube root of each of the following numbers by prime factorization method. (i) 64 64 = 2 × 2 × 2… Read More
Question 1: Construct the following quadrilaterals: (i) Quadrilateral ABCD      AB = 4.5 cm, BC = 5.5 cm, CD = 4 cm, AD =… Read More
Question 1. Use a suitable identity to get each of the following products. (i) (x + 3) (x + 3)  Solution: (x + 3) (x… Read More
Problem 1: What will be the unit digit of the squares of the following numbers? Solution: To find the unit digit of the square of… Read More