40000
43,678,426,785 rounded to the nearest ten thousands is 43,678,430,000
6400
The number 387,210 rounded to the nearest ten thousand is 390,000.
Zero
The number 57364 rounded to the nearest ten thousand would be 60000.
You can't round off this number in the nearest ten thousand simply because looking at this number it's only on the hundreds place.
20,000 as the number at thousand is 7 (7>5)
404,999
94999
Any number between 7500 and 8500.
280,000
If you round off 3,278,429 to the nearest ten thousand, you would look at the number in the one thousand place - in this case, an 8. If the number is 5 or less, you would round down. If the number is 6 or higher, you would round up. Since 8 is higher that 6, you would round up, yielding 3,279,000.