Answer: 1.2790 as a fraction is 639.5/500
Converting the decimal number 1.2790 into a fraction might seem tricky at first, but with the right steps, it's straightforward. This guide will walk you through the entire process, ensuring you understand each part of the conversion.
The decimal 1.2790 can be broken down as:
1.2790 = 1 + 0.279
Here, 1 is the whole number part, and 0.279 is the decimal part.
Focus on converting the decimal part, 0.279, to a fraction. To do this, consider the place value of the decimal:
0.279 =
279
1000
Now, simplify the fraction 279/1000. To do this, find the greatest common divisor (GCD) of 279 and 1000.
Now, divide both the numerator and the denominator by their GCD:
279 ÷ 2
1000 ÷ 2
=
139.5
500
So, 0.279 as a fraction is 139.5/500
Now that you have 1.2790 = 1 + 0.279, express the entire number as a mixed fraction:
1.2790
= 1 +
139.5
500
=
500
500
+
139.5
500
=
639.5
500
Here, 500/500 is the whole number 1, and 139.5/500 is the fractional part.
Answer: 1.2790 = 639.5/500
Converting 1.2790 to a fraction results in 639.5/500. This detailed process of breaking down the decimal, converting it, simplifying, and then combining the parts gives you a clear understanding of how to handle such conversions in math, everyday calculations, or even complex problem-solving.