Question 1 - Page 76 - Decimal Sequences - Chapter 3 Class 7 - A peek beyond the Point (Ganita Prakash)

Transcript

Question 1 – Page 76 Identify the change and write the next 3 terms for each sequence given below. Try to do this computation mentally. (a) 4.4, 4.45, 4.5, … (b) 25.75, 26.25, 26.75, … (c) 10.56, 10.67, 10.78, … (d) 13.5, 16, 18.5, … (e) 8.5, 9.4, 10.3, … (f) 5, 4.95, 4.90, … (g) 12.45, 11.95, 11.45, … (h) 36.5, 33, 29.5, … 4.4, 4.45, 4.5, 4.55, 4.60, 4.65,… (b) 25.75, 26.25, 26.75, 27.25, 27.75, 28.25, (c) 10.56, 10.67, 10.78, 10.89, 11.00, 11.11, (d) 13.5, 16, 18.5, 21.0, 23.5, 26.0,.. (e) 8.5, 9.4, 10.3, 11.2, 12.1, 13.0, … (f) 5, 4.95, 4.90, 4.85, 4.80, 4.75,… (g) 12.45, 11.95, 11.45, 10.95, 10.45, 9.95,… (h) 36.5, 33, 29.5, 26.0, 22.5, 19.0,.. In detail (a) 4.4, 4.45, 4.5, ... Change: Add 0.05 Next 3 terms: 4.55, 4.6, 4.65 (b) 25.75, 26.25, 26.75, ... Change: Add 0.50 Next 3 terms: 27.25, 27.75, 28.25 (c) 10.56, 10.67, 10.78, ... Change: Add 0.11 Next 3 terms: 10.89, 11.0, 11.11 (d) 13.5, 16, 18.5, ... Change: Add 2.5 Next 3 terms: 21.0, 23.5, 26.0 (e) 8.5, 9.4, 10.3, ... Change: Add 0.9 Next 3 terms: 11.2, 12.1, 13.0 (f) 5, 4.95, 4.90, ... Change: Subtract 0.05 Next 3 terms: 4.85, 4.80, 4.75 (g) 12.45, 11.95, 11.45, ... Change: Subtract 0.50 Next 3 terms: 10.95, 10.45, 9.95 (h) 36.5, 33, 29.5, ... Change: Subtract 3.5 Next 3 terms: 26.0, 22.5, 19.0