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That is a convention. In some countries it is customary to include the zero before the decimal point, in others it isn't.

That is a convention. In some countries it is customary to include the zero before the decimal point, in others it isn't.

That is a convention. In some countries it is customary to include the zero before the decimal point, in others it isn't.

That is a convention. In some countries it is customary to include the zero before the decimal point, in others it isn't.

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14y ago
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14y ago

That is a convention. In some countries it is customary to include the zero before the decimal point, in others it isn't.

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Q: Why do you write 0 before the decimal point?
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How do you write twenty-four hundredths in decimal form?

buy putting 24 behind the decimal point and you can put a 0 in front of the decimal point but you don't haft to


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To write 7.21 in scientific notation, move the decimal point to the right until there is only one non-zero digit to the left of the decimal. In this case, it would be 7.21 = 7.21 x 10^0, since the decimal point is already in the correct position.


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40 and there is absolutely no need to add the decimal point. Furthermore, adding a 0 after the decimal point is wrong because that implies that the number is accurate to a tenth - and there is o justification for that level of accuracy.


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