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You would use different units of measurement. You would measure the size (circumference) of your waist (for trousers) in centimetres. You would not measure the distance to the moon in centimetres!

Q: Should all our length be measured to the same decimal point?

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It should be moved 4 places.

There should be no points after the decimal point.

With suitable use of the decimal point, any object can be measured in centimetres. Your palm is a few cm across. The length or height of a normal pet would be measured in cm. Peoples' height is measured in cm although they may be expressed in metres. Similarly, larger objects such as rooms may be measured in metres but, for precision, cm will be used.

A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. So the required decimal representation is 127. If 127 mm were to be expressed in terms of some other unit of length then that unit of length should have been specified in the question.

Depends on the length of the number. If you have something like 345,670,000,000,000, then it would be 345.67 x 1012

Related questions

It should be moved 4 places.

for the SI units of measurements, length is measured in meters. for anything else, length is measured in inches, feet, yards, etc.

A decimal point is a point, and that an ideal point has no dimensions (no width, no length, no height). So the answers is: there are no square feet in one decimal.

There should be no points after the decimal point.

The length of an American Indian horse will vary according to genetics and nutrition. A horses length is measured from the point of the shoulder to the point of the buttock, the head and neck are never included in a horses length measurement and this should always be taken into account.

With suitable use of the decimal point, any object can be measured in centimetres. Your palm is a few cm across. The length or height of a normal pet would be measured in cm. Peoples' height is measured in cm although they may be expressed in metres. Similarly, larger objects such as rooms may be measured in metres but, for precision, cm will be used.

Distance.

Take the number before the decimal point as the whole number. Take the part after the decimal point. As it has been measured it will be a terminating decimal so put it over 1 followed by the same number of zeros as digits in the decimal number and simplify to make the fractional bit. eg measured as 2.75 would be 2 75/100 = 2 3/4

A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. So the required decimal representation is 127. If 127 mm were to be expressed in terms of some other unit of length then that unit of length should have been specified in the question.

Because until that time there is nothing to put the decimal point in!

Depends on the length of the number. If you have something like 345,670,000,000,000, then it would be 345.67 x 1012

One way is to multiply the numbers ignoring the decimal point. If the first multiplicand has d1 digits after the decimal point, and the second has d2 digits after the decimal point, then their product has (d1 + d2) digits after the decimal point.An alternative for the second stage is to estimate the answer to determine where the decimal point should go.