Question

2. Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate (by rounding off to nearest tens):
(a) 439 + 334 + 4,317​

Answer 1

439 nearest 100=400

334=nearest 100=300

4317=nearest 100=4000

400+300+4000=4700

439=nearest 10=440

334 nearest 10=330

4317 nearest 10=4320

440+330+4320=5090