(a) The temperature drops by 10℃.
(b) 3 people died in a traffic accident.
(c) The population in Hong Kong is 6 800 000.
(d) 4 cans of corn soup cost $10.
(e) There are 372 words in my composition.
(f) The ice cream contains 300 Calories.
(g) 68 000 birds visit Hong Kong every winter.
Exact values: _________________________; estimated values: ____________________
點分有冇可能架?
更新1:
For questions 2, choose the most suitable answer from the four choices. 2. Which of the following is a reasonable estimation of 159.04+13.97? A. 200+14 B. 160+14 C. 159+14 D. 200+10 條題目冇講取幾多位小數喎,點選呀?
更新2:
3. Write down an appropriate unit for each of the following items. (a) time taken for running 100 metres ______ (b) weight of an apple ______ (c) the height of a building ________
