Think and share situations where it is appropriate to (a) round up, (b) round down, (c) either rounding up or rounding down is okay and (d) when exact numbers are needed.
Ordering food for events, buying construction materials, estimating travel time with buffer.
Giving conservative estimates for costs, shopkeeper saying 'around ₹450' for a ₹470 item.
Stating population figures approximately, discussing general measurements like building heights.
Financial transactions, medical dosages, engineering specifications, scientific research.
Explanation
(a) The chapter gives an example of a principal ordering 750 sweets for 732 people. (b) The chapter gives an example of a shopkeeper rounding down the price. (c) The chapter mentions that for population figures, approximate values are often sufficient. (d) Exact numbers are critical where precision affects outcomes significantly.