It is already rounded to the nearest ten as 840
840
839
800
800
456
300
842
850
850
145
It is: 850
To the nearest ten, 840. To the nearest hundred, 800. To the nearest thousand, 1000.
15 840 rounds to:0 to the nearest hundred thousand20 000 to the nearest ten thousand16 000 to the nearest thousand15 800 to the nearest hundred15 840 to the nearest ten and whole number/unit
27844 rounds to30 000 to the nearest ten thousand28 000 to the nearest thousand27 800 to the nearest hundred27 840 to the nearest ten
830
840
The answer will depend on the extent of rounding. To the nearest whole number it is 836, to the nearest million, it is 0.
840
It ends with a 2, so it must be rounded down to 840.
840
840