Find the following values without a calculator. Round off the following numbers to the nearest 10.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 22
- 144
- 721
- 4537
(a)
22 (=) 20
(b)
144 (=) 140
(c)
721 (=) 720
(d)
4537 (=) 4540
Answer(s): 20, 140, 720, 4540