CBSE Class 7 Mathematics
Question 7 of 14
Large Numbers Around Us — Question 7
Back to all questions 7
Question A calculator has only ‘+10,000’ and ‘+100’ buttons. Write an expression describing the number of button clicks to be made for the following numbers:
(a) 20,800
(b) 92,100
(c) 1,20,500
(d) 65,30,000
(e) 70,25,700
(a) 20,800 = 2 × 10,000 + 8 × 100 Number of clicks = 2 + 8 = 10 clicks (b) 92,100 = 9 × 10,000 + 21 × 100 Number of clicks = 9 + 21 = 30 clicks (c) 1,20,500 = 12 × 10,000 + 5 × 100 Number of clicks = 12 + 5 = 17 clicks (d) 65,30,000 = 653 × 10,000 + 0 × 100 Number of clicks = 653 + 0 = 653 clicks (e) 70,25,700 = 702 × 10,000 + 57 × 100 Number of clicks = 702 + 57 = 759 clicks