2.85
1kg and 620g is equivalent to 2kg to the nearest half kilogram. When rounding to the nearest half kilogram, any weight with 0.5kg or more is rounded up to the next whole kilogram. Since 620g is more than halfway to the next kilogram (500g), the weight of 1kg and 620g is rounded up to 2kg.
Least weight would be 4 tons. The greatest weight would be 8 tons.
That depends on what you have 121.66 of. Pounds can be units of money or units of weight. There isn't enough information here to give an accurate answer. Under normal circumstances, 121.66 rounds to 122.
1/4 pound (4 ounces) is the weight on Earth of 113.4 grams of mass. (rounded)
2.85
2.85
2.85
Fanny 2.849
2.85
2.85
35.77
Rounded to the nearest ton, that's 4 tons. The smallest weight rounded to 4 tons is 3.5 tons.
The answer is 1 pound.
10
A bull moose can weigh anywhere from 800 to 1500 pounds.
The answer depends on the extent to which the number is being rounded.