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What does a half life fraction look like?
A half life may or may not be a fraction. The half life of carbon 14, for example, is 5715 years - not really a fraction, unless you are thinking in terms time periods which are much longer than a year.
An expression that uses words to represent a real-life situation?
Fraction!
How is gravitational energy used in every day life?
You stay on the earth. Without it you would fly off into space and die because the atmosphere will be too thin to sustain life.
Is fraction important in real life situations?
yes because if there were no fractions there will be nothing.
How do you do Addition and subtraction of dissimilar fractions?
you just undissimilarize them. No just kidding. You need to find LCD, lowest common denominator. If you are too lazy, then just multiply the two denominators together. Basically, you take one denominator from fraction "A", and multiply that value to numerator and denominator of fraction "B". Do the same with Denominator "B" to fraction "A". Once you have the same denominator, you can add or subtract your numerators. If you are doing a homework assignment and you are in 7th grade or below, you MUST reduce or else you will lose points. But if you're in anything beyond Algebra, nobody remotely cares about reducing fractions. Fraction reduction barely even matters in real life, since real practical science/engineering calculations are done in decimal points. In calculus, there's a TON of fraction work, but again none of that matters in real life because most calculus problems in real life are done numerically with decimals.
