650
600
600
7 is the ones digit in the number 647. Since 7 is five or more, the tens digit next to it is increased by one and the ones digit becomes zero. 647 rounded to the nearest 10 is 650.
It is: 100
60
It is then 740 when rounded to the nearest ten.
36,184 rounded to the nearest ten thousands place is 40,000.
2602 rounded to the nearest ten is 2600.
320
20
260