399 to the nearest 10 is 400, because the 99 will wound up to 100.
Neas
400
400
399 rounded to the nearest hundred is 400. 399 rounded to the nearest tens is also 400.
399 to the nearest tens is 400
400
398.669 rounded to the nearest whole number is 399
400
60
It is then 740 when rounded to the nearest ten.
30
36,184 rounded to the nearest ten thousands place is 40,000.
2602 rounded to the nearest ten is 2600.
320
20