50.
760
999,999,999 = 1,000,000,000 to the nearest tens.
18.19 rounded to the nearest tens place is 20
9.99 rounded to the nearest tenth is 10.0
152 to the nearest tens place is 150
456.82 to the nearest tens place = 460
554 to the nearest tens place is 550
To the nearest tens place, 0.6 = 0
2,742 to the nearest tens place is 2,740
456 to the nearest tens place is 460
85 to the nearest tens place = 90
To the nearest tens, it is 560.00
391 rounded to the nearest tens place is 390
To round 1297 to the nearest tens place, we look at the digit in the tens place, which is 9. Since 9 is greater than or equal to 5, we round up. Therefore, 1297 rounded to the nearest tens is 1300.
The answer is 60
50.