Q: There must be a decimal point to round a number?

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If you must have it, it is after the right-most digit.

2.0The first digit after the decimal point is "9". We now look at the second digit after the decimal point. As this is "7", which is greater than or equal to "5", we must round the "9" up (we make the number larger).This makes the "9" become a "0" and to make this number larger we must also therefore make the "1" into a "2". This is because the "9" has actually become a "10" and so we have to add "1" to the digit to the left (1 + 1 = 2).

The first place after the decimal point is tenths. The second place after the decimal point is hundredths The third place after the decimal point is thousandths. So the number must extend to the third place after the decimal.

You round the fractions to decimal numbers to a suitable number of decimal digits. Then create a stem and leaf plot using these numbers - ignoring the decimal point, except that you must make sure you mention it in the key.

Only on digit may be to the left of the decimal point. The mantissa must be a number in the interval [0, 10).

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If you must have it, it is after the right-most digit.

2.0The first digit after the decimal point is "9". We now look at the second digit after the decimal point. As this is "7", which is greater than or equal to "5", we must round the "9" up (we make the number larger).This makes the "9" become a "0" and to make this number larger we must also therefore make the "1" into a "2". This is because the "9" has actually become a "10" and so we have to add "1" to the digit to the left (1 + 1 = 2).

1. You must first go to the place in front of the decimal and round that number 2. Do the same for the next number 3. Lastly do the operation to find your answer

The first place after the decimal point is tenths. The second place after the decimal point is hundredths The third place after the decimal point is thousandths. So the number must extend to the third place after the decimal.

You round the fractions to decimal numbers to a suitable number of decimal digits. Then create a stem and leaf plot using these numbers - ignoring the decimal point, except that you must make sure you mention it in the key.

Only on digit may be to the left of the decimal point. The mantissa must be a number in the interval [0, 10).

You can add or subtract it as a whole number. If you must use its decimal form, you just stick a decimal point at the end the whole number!

You round up if a number is 5 or more. You start at the right. So9 is more than 5, round up. The 1 becomes 2. Two is less than 5; the 2 remains the same. Therefore, start with the next number, the 2. Again, it is less than 5. If you are supposed to round but keep the decimal point, it would be 32.5. If you must round to a full number, it is 32.

decimal point to the left of the whole number. Example: 1= whole number. Less than 1 as a decimal is .00, .01, 02 etc.

the answer is it stays in the same place.* * * * *Not quite.Suppose you want to multiply two decimal numbers A and B. Multiply the two numbers ignoring the decimal points.Count the number of digits after the decimal point in the number A.Count the number of digits after the decimal point in the number B.Add these two numbers together. This is the number of digits you want after the decimal point in the answer. So count back from the end.Example:2.54 * 3.5 (this is number of centimetres in 3.5 inches)254*35 = 8890Number of digits after the decimal point in 2.54 is 2 (5 and 4).Number of digits after the decimal point in 3.5 is 1 (5).2 + 1 = 3 so there must be 3 digits after the decimal point in the answer.Therefore 8890 becomes 8.890NOW, you can simplify it to 8.89

Move the decimal point left seven places so that there is one digit before the decimal. Because the decimal point was moved left seven places, the new number must be multiplied by 107: 2.3789 x 107 (The zeros are not needed because they are at the end of the number and are after the decimal point.)

an exact decimal must be with the number 0. in it or it is not exact.