It is: 630
600, and 630 respectively.
It is 7,631,000
You write 7,630,000 in standard form as 7.63 × 106
35% of 630:= 35% * 630= 0.35 * 630= 220.5
630
630
620
1000
630 rounded the the nearest hundred is 600. The 6 is the hundred digit and 30 is less than 50, so rounded to nearest hundred is 600.
630
630
620
640
630
It is 630, as appears in the question.
That would be 160.