9050 (rounded down)
and
8950 (rounded up).
Many schools teach that 5 should always be rounded up. That is a simple rule to follow but it has a serious flaw: it introduces an upward bias in the calculations. A better rule is that to round 5s so that the last significant digit is even.
350 to 449
900
Depends on what you are rounding to.... The nearest 10 it would be 9995 for the smallest and 10004 for the largest. The nearest 100 it would be 9950 for the smallest and 10049 for the largest. The nearest 1000 it would be 9500 for the smallest and 10499 for the largest.
70
It is 8999950.
350 to 449
900
Estimated to the nearest tens, 359 is 360. Estimated to the nearest hundreds, it is 400.
estimated
Depends on what you are rounding to.... The nearest 10 it would be 9995 for the smallest and 10004 for the largest. The nearest 100 it would be 9950 for the smallest and 10049 for the largest. The nearest 1000 it would be 9500 for the smallest and 10499 for the largest.
1,450
70
599950
It is 8999950.
649
3150
25 to 34