Left
Move the decimal place of the number you are dividing by one place to the left.
If you move the decimal point the same direction and number of places for the dividend and the divisor, this accomplishes the same thing as multiplying (or dividing) a numerator and denominator by the same number (in this case it is a power of ten). Moving the decimal place to the right by one place effectively multiplies the number by 10, and moving the decimal place to the left by one place is the same as dividing the number by 10. Example: 12345.6 / 10 = 1234.56
Count the number of digits after the decimal point. The denominator is 1 followed by the same number of 0s.So, for example, 12.0356 has 4 digits after the decimal place. Therefore the denominator is 10000, and the rational form is 120356/10000
81 lots of 10000 equal 810000. And since 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, the required decimal representation is 810000.
Estimating quotients gives an indication of the order of magnitude of the answer. That is, whether the answer is in units, or tens, or hundreds, thousands and so forth. Basic understanding of the placement of the decimal point should then be a trivial exercise.
You move decimal one place to the left when dividing by ten You move decimal two places to the left when dividing by 100 You move decimal three places to the left when dividing by 1000, etc...
It is: 10000/17000 times 100 = 58.8% to one decimal place
Dividing something by ten moves the decimal one place to the right. So 1719/10 = 171.9, or 1719/100 = 17.19, etc. Hence 0.1719 = 1719/10000.
Left
It goes two places to the left.
Move the decimal place of the number you are dividing by one place to the left.
If you move the decimal point the same direction and number of places for the dividend and the divisor, this accomplishes the same thing as multiplying (or dividing) a numerator and denominator by the same number (in this case it is a power of ten). Moving the decimal place to the right by one place effectively multiplies the number by 10, and moving the decimal place to the left by one place is the same as dividing the number by 10. Example: 12345.6 / 10 = 1234.56
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 10000, exactly as in the question.
Move the decimal place two spots to the left.
Move the decimal point one place to the right.
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 10000, exactly as in the question.