Students can Download Maths Chapter 1 Playing with Numbers Ex 1.1 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 1.1
Question 1.
Write the following numbers in generalized form 39, 52, 106, 359, 628, 3458, 9502, 7000.
Answer:
39 = 30 + 9 = (3 × 10) + (9 × 1)
52 = 50 +2 = (5 × 10) + (2 × 1)
106 = 100 + 6 = (1 × 100) + (0 × 10)+(6 × 1) 359 = 300 + 50 + 9 = (3 × 100) + (5 × 10) + (9 × 1)
628 = 600 + 20 + 8 = (6 × 100) + (2 × 10) + (8 × 1)
3458 = 3000 + 400 + 50 + 8 = (3 × 1000) + (4 × 100) + (5 × 10) + (8 × 1)
9502 = 9000 + 500 + 2 = (9 × 1000) + (5 × 100) + (0 × 10) + (2 × 1)
7000 = 7000 + 0 + 0 + 0 = (7 × 1000) + (1 × 100) + (0 × 10) + (0 × 1)
Question 2.
Write the following in the decimal form.
(i) (5 × 10) + (6 × 1);
(ii) (7 × 100)+ (5 × 10)+ (8 × 1);
(iii) (6 × 1000) + (5 × 10) + (8 × 1);
(iv) (7 × 1000) + (6 × 1);
(v) (1 × 1000) + (1 × 10);
Answer:
(i) (5 × 10) + (6 × 1);
50 + 6 = 56
(ii) (7 × 100) + (5 × 10)+ (8 × 1);
700 + 50 + 8 = 758
(iii) (6 × 1000) + (5 × 10) + (8 × 1);
6000 + 50 + 8 = 6058
(iv) (7 × 1000) + (6 × 1);
7000 + 6 = 7006
(v) (1 × 1000) + (1 × 10);
1000 + 10 = 1010