KSEEB Solutions for Class 8 Maths Chapter 5 Squares, Square Roots, Cubes, Cube Roots Ex 5.1

KSEEB Solutions for Class 8 Maths Chapter 5 Squares, Square Roots, Cubes, Cube Roots Ex 5.1

Karnataka Board Class 8 Maths Chapter 5 Squares, Square Roots, Cubes, Cube Roots Ex 5.1

Question 1.
Express the following statements mathematically.

(i) Square of 4 is 16
Answer:
4 × 4 = 16
4² = 16

(ii) Square of 8 is 64
Answer:
8 × 8 = 64
8² = 64

(iii) Square of 15 is 225
Answer:
15 × 15 = 225
15² = 225

Question 2.
Identify the perfect squares among the following numbers. 1, 2, 3, 8, 36, 49, 65, 67, 71, 81, 169, 625, 125, 900, 100, 1000, 100000.
Answer:
The perfect squares are 1 = 2², 36 = 6²,49 = 7², 81 = 9², 169 = 13², 625 = 25², 900 = 30², 100 = 10².

Question 3.
Make a list of all perfect squares from 1 to 500.
Answer:
The Perfect square from 1 to 500 are 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361, 400, 441, 484.

Question 4.
Write 3- digit numbers ending with 0, 1, 4, 5, 6, 9 one for each digit but none of them is a perfect square
Answer:
200, 201, 204, 205, 206, 209.

Question 5.
Find the numbers from 100 to 400 that end with 0, 1, 4, 5, 6, or 9 which are perfect squares.
Answer:
100, 121, 144, 169, 196, 225, 256, 289, 324, 36