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)
- 57
- 448
- 686
- 3180
(a)
57 (=) 60
(b)
448 (=) 450
(c)
686 (=) 690
(d)
3180 (=) 3180
Answer(s): 60, 450, 690, 3180