How does a calculator work?
You are supposed to use a calculator at school, but you don't know exactly how it works? With some basic knowledge, the buttons are self-explanatory.
Who starts in school, with the calculator To start working, you are confronted with a lot of keys. Don't let that confuse you. The most important thing is that you know the keys that you are actually using. Normally, the teacher should then explain in advanced arithmetic maneuvers how the respective calculation works on the calculator.
How does the calculator work?
- First of all, it's important to know that not all calculators can do everything. There are a few calculators available for school use and are particularly recommended as you will need all of them Functions own and still not violate the admission requirements for exams violated. If necessary, ask the teacher which calculator he or she recommends.
- One important piece of information about your pocket calculator is whether it obeys the "point before line" rule. If you are doing 5 + 3 x 4, the calculator should calculate 5 + 12 = 17, not 15 x 4 = 60.
- In the upper grades you need a calculator that can calculate a logarithm. The corresponding key is labeled "log".
- You can use the sin and cos keys to calculate the sine and cosine of an angle. You should learn exactly how this works in math class.
- Another important function that every pocket calculator should have is the circle number π, Pi, with which you can calculate areas and volumes of circles and spheres.
- When doing more complicated calculations, a cache is important. If you do a partial calculation, save the intermediate result with M +. Then do the second partial calculation, and when you need the saved result of the first again, press MR / C.
Calculator: calculate fractions using different methods
Calculating fractions with the calculator is a bit complicated, but with a little practice ...
