Students can Download Maths Chapter 1 Playing with Numbers Ex 1.5 Questions and Answers, Notes Pdf, KSEEB Solutions for Class 8 Maths helps you to revise the complete Karnataka State Board Syllabus and score more marks in your examinations.

## Karnataka Board Class 8 Maths Chapter 1 Playing with Numbers Ex 1.5

Question 1.
Using the numbers from 5 to 13 construct a 3 × 3 magic square. What is the magic sum here? What relation is there between the magic sum and the number in the central cell?
Magic sum is 27
Central number is 9
We have ⇒ 27 = 3 × 9
Magic sum is 3 times the central number.

 12 5 10 7 9 11 8 13 6

Question 2.
Using the numbers from 9 to 17 construct a 3 × 3 magic square. What is the Magic sum here? What relation is there between the magic sum and the number in the central cell?

 16 9 14 11 13 15 12 17 10

Magic sum is 39
Central Number is 13
we have ⇒ 39 = 3 × 13
The magic sum is 3 times the central number

Question 3.
Starting with the middle cell in the . bottom row of the square and “using numbers from 1 to 9 construct a 3 × 3 magic square.

 2 9 4 7 5 3 6 1 8

Question 4.
Construct a 3 × 3 magic square using all odd numbers from 1 to 17.