Definition Of Calculator

Calculator is a device that performs mathematical operations easily.

More About Calculator

• Scientific calculators are used to solve complex calculations.
• Advanced calculators can display graphs.

  Example of Calculator

  

  Video Examples: Using a Calculator and Significant figures GCSE Maths revision
   

   

Examples of Calculator

Ques: Find the sum of 126 and 248.

Choices:

• A. 347
  B. 374
  C. 247
  D. 357
  Correct Answer: B

Solution:

• Step 1: To display 126, press 1, 2, and 6 button of the calculator.
  Step 2: Then press ‘+’.
  Step 3: To display 248, press 2, 4, and 8 button of the calculator.
  Step 4: Finally click on the “=” button and it will display the answer as 374.

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