Question

3. Round 99.22898989 to 3 decimal places.
99.228
99.229
99.230
99.231

4. Round 112.456789 to the thousandths place.
112.45
112.46
112.456
112.457

Answer 1

...You just asked this and removed it. Stop.

Answer 2

then just go away. @Brenar

Answer 3

99.22898989, 3 decimals.

\(99.228\vdots98989\)
if the digit after \(\vdots\) is 5,6,7,8 or 9, increase the previous digit by 1. otherwise, don't change it.
the answer: 99.229.