Decimals
Because decimal numbers are fractions in disguise, the same trick can be used to ‘‘clear the decimal’’ in equations with decimal numbers. Count the largest number of digits behind each decimal point and multiply both sides of the equation by 10 raised to the power of that number.
Examples
0:25x + 0:6 =
0.1
Because
there are two digits behind the decimal in 0.25, we need to multiply both sides
of the equation by 102 = 100. Remember to distribute the 100 inside
the parentheses.
Practice
Solve for x after
clearing the decimal. If your solution is a fraction, convert the fraction to a
decimal.
Solutions
“Sumber Informasi”
Labels:
Mathematician
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