![]() In Ancient Greece, abacus appeared in the 5th century BC. Even if you know all the formulas for solving math and science tasks, you will need to know how to operate a scientific calculator to get the correct. Presumably, the first Abacus appeared in ancient Babylon about 3 thousand years BC. Abacus was a grooved board with movable counting labels (stones or bones). The ancestor of the modern calculator is Abacus, which means "board" in Latin. You can see the current math calculations in a smaller display that is below the main display of the calculator.Ĭalculations order for this given example is the following: 2+2=4, subtotal - 4. Why do we get 8 when trying to calculate 2+2x2 with a calculator?Ĭalculator performs mathematical operations in accordance with the order they are entered. įrequently asked questions about the calculator Solve geometry problems, proofs, and draw geometric shapes. Plot and analyze functions and equations with detailed steps. To enter (divide) - key on the numeric keypad on the right or a combination of keys and. Provide step-by-step solutions to math word problems. To enter (multiplication) - key on the numeric keypad on the right or a combination of keys and. To enter - key at the top or key on the right. To enter - key at the top or key on the numeric keypad on the right. To erase the last character - (arrow keys). To use free online calculator you can use both ordinary numeric buttons at the top of a keyboard and numeric buttons on the right of a keyboard. The result is equal to 625.ĭeduction percentage of the number: 500 25. The result is equal to 5(%).Īdding percentage to the number: 500 25. It is the best choice for solving long expressions and it allows you to edit the expression anywhere, removing the hassle of typing the whole expression again - which cuts down operation time. The result is equal to 125.Ĭalculating what percent is one number of another number: 25 500. When it comes to interactive displays, Super Calculator is the best. The result is equal to 81.Ĭalculation of percentage of the number of: 500 25. resets the calculator without resetting the memory.Įxamples of calculations on the online calculatorĬalculate the square root of 529: 529. reset the calculator and reset the memory addition, - subtraction, - multiplication, - division remove the last character on the display Instructions for using the online calculator Keys function Detailed instructions for using the calculator, see below. You can make not only simple math calculations and calculation of interest on the loan and bank lending rates, the calculation of the cost of works and utilities.Ĭommands for the online calculator you can enter not only the mouse, but with a digital computer keyboard. Use for work, school or personal calculations. Large, easy and convenient online calculator ![]()
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