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)
- 78
- 172
- 875
- 3978
(a)
78 (=) 80
(b)
172 (=) 170
(c)
875 (=) 880
(d)
3978 (=) 3980
Answer(s): 80, 170, 880, 3980