Three halves is one and a half, or 1.5 when written as a decimal.
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1.5
halve of 10.5.
Halves are when something is divided into two equal parts. Here are some sentences.Both halves of the room voted to pass the town law.He doesn't do things by halves!Two halves make a whole.
0.4887039Three decimal places is up to the second eight, but because the '7' after the second eight is higher than 5, you generally round up, so the second eight would become nine.This would give you your answer of:0.489
If you are looking at this from a maths perspective, the 'significant figures' are the number of digits counting from the first non-zero digit, so the number of significant figures in 10.0 is three. You may be asked a question, and told to give the answer 'to three significant figures'. This would mean the answer would look something like '12.2' or '0.0254'. This is in contrast to decimal places, which refer to the number of digits after the decimal point. For example, the number 10.0 is quoted to one decimal place.