In the metric system, the Gram, as in kilogram is the standardfor mass measurement
The best estimate for a pair of sneakers is 1 kilogram.
It is okay to estimate mass when precise measurements are not required, or when the mass is difficult to measure accurately. Estimating mass may be acceptable in everyday situations such as cooking or packing luggage, but for more critical applications like pharmaceutical production or research, it is best to use precise measurements.
you can measure the mass by putting it on a balance and measure really quickly. the volume you can estimate an approximate answer by putting it in water and measuring its displacement.
It depends on what type of TV it is, some TVs weigh more than others.
Which is the best estimate for the mass of a duck?
3 grams
1kg
10 grams
250 kilograms
That depends a lot WHAT you want to estimate about the lemon - which of its qualities, e.g., its mass, its diameter, its sourness, its color, etc.
1 gram
15kg
About 250 grams
0.2 grams
1 gram
the nearest would be 15kg