350
half of 700 is 350 and half of 70 is 35
700 million years
700 grams is heaver. A kg (kilogram) is 1000 grams so one-half KG is 500 grams, less than 700 g.
700
350 grams.
300-700
700 milliion years. The definition of half-life is the period of time during which one-half of the atoms of an element undergo decay into other elements.
To make an educated guess. for instances if you were asked to estimate half of 1426, you would round down to to 1400, and half that which is much easier. Half of that that is 700, therefore you would estimate the answer to be around 700.
700 million years
600g.
The answer is 350.