It is 644 because .4 is less than .5
600
The answer will depend on the degree to which the number is rounded. Without any indication of that, it is not possible to answer the question sensibly.
6.6273 rounded to the nearest thousandths is 6.627 Rounded to the nearest hundredths, it is 6.63. Rounded to the nearest tenths, it it 6.6. Rounded to the nearest ones, it is 7.
3.12 rounded to the nearest tenth is 3.1. Rounded to the nearest one is 3. Rounded to the nearest ten is 0.
644
It is 644 because .4 is less than .5
600
The answer will depend on the degree to which the number is rounded. Without any indication of that, it is not possible to answer the question sensibly.
112.3
When rounded to the nearest hundredths, 100.147 is rounded to 100.15. When rounded to the nearest tenths, it is rounded to 100.1. When rounded to the nearest hundreds, it is rounded to 100.
6.6273 rounded to the nearest thousandths is 6.627 Rounded to the nearest hundredths, it is 6.63. Rounded to the nearest tenths, it it 6.6. Rounded to the nearest ones, it is 7.
853 rounded to the nearest 100: 900. 10853 rounded to the nearest 100: 10900.
133.06 rounded: Rounded to the nearest tenth: 133.1 Rounded to the nearest whole: 134 Rounded to the nearest ten: 130 Rounded to the nearest hundred: 100
3.12 rounded to the nearest tenth is 3.1. Rounded to the nearest one is 3. Rounded to the nearest ten is 0.
-- Rounded to the nearest millionth, it's 0.345591 . -- Rounded to the nearest hundred thousandth, it's 0.34559 . -- Rounded to the nearest ten thousandth, it's 0.3456 . -- Rounded to the nearest thousandth, it's 0.346 . -- Rounded to the nearest hundredth, it's 0.35 . -- Rounded to the nearest tenth, it's 0.4 . -- Rounded to the nearest whole number, it's zero.
8 is already rounded to the nearest 10th. Rounded to the nearest 10 is 10.