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FutureStarrHow Do You Do 1 2 on a Calculator OR
1 2 on a calculator is a key way of representing the square root function on the simple calculator, a type of calculator with a keypad. The names of the buttons is usually "square root". The key hit numbers on the keypad in order to use the calculator to perform these calcula
You can't convert a decimal to a fraction on the calculator, but the calculator can help you do it with a pencil and paper. Suppose you want to express 0.7143 as a fraction. You could write it as 7143/10,000, but maybe you want to reduce this to something a lot more simple, such as a denominator that's a single digit. To do this, enter the original number as decimal, and then multiply by the desired denominator. This gives you the numerator of the fraction. For example, if you want a fraction with 7 in the denominator, multiply 0.7143 by 7. The calculator will display the numerator, which in this case is 5.0001, which is close enough to 5 to be equal. You can then write the fraction 5/7 on a piece of paper.
Have you ever wondered how much the earth weighs? Maybe not, but now that you've been asked, you probably do now! Obviously, the earth weighs a lot. The weight of the earth is 6,000,000,000,000,000,000,000,000 kilograms! Whoa! That's a lot of zeros! What if you were working on a problem involving this weight? You certainly wouldn't want to have to punch that number into a calculator over and over again. How time-consuming! (Source: study.com)
Percentages are sometimes better at expressing various quantities than decimal fractions in chemistry or physics. For example, it is much convenient to say that percentage concentration of a specific substance is 15.7% than that there are 18.66 grams of substance in 118.66 grams of solution (like in an example in percentage concentration calculator). Another example is efficiency (or its special case - Carnot efficiency). Is it better to say that a car engine works with an efficiency of 20% or that it produces an energy output of 0.2 kWh from the input energy of 1 kWh? What do you think? We are sure that you're already well aware that knowing how to get a percentage of a number is a valuable ability. (Source: www.omnicalculator.com)