They must have at least one factor other than 2 and 5.
9
Divide the denominator into the numerator.
keep your decimals in the right position
You divide the numerator by the denominator.
Divide the denominator into the numerator.
It is: 20,000/550,000 times 100 = 3.63% recuring decimals of 0.63
Rational 5.121212 = 5 121212/1000000 As a rational fraction . However, if you mean 5.121212.... (recuring to infinity_ Then Let P = 5.121212.... & 100P = 512.121212... Subtract 99P = 507 (Note the recuring decimals subtract to zero) P = 507/99 P = 5 12/99 P = 5 4/33 Which is also rational . NB Terminating decimals do NOT have a series of stops. Recuring to infinity decimals have three or more dots/stops after the last decimal digit.
9
By dividing the numerator by the denominator
Divide the denominator into the numerator.
Fractions to decimals: Divide the numerator by the denominator. Decimals to fractions: Put the fraction without the decimal point in the numerator. In the denominator, put a "1", followed by as many zeroes as there are decimals. For example, 0.058 becomes 58 / 1000.
keep your decimals in the right position
There are several rules for decimals, depending on what you want to do.
It must be of the form 2a*5b where a and b are non-negative integers. That is to say, it must be a number whose only factors are 2 or 5.
Divide the numerator by the denominator
You divide the numerator by the denominator.
Divide the denominator into the numerator.