How to Use Adding Machines to Add

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Adding machines are similar to calculators in use. However, adding machines provide more functions when calculating numbers. Adding machines are used by many individuals and businesses; the financial industry is a particularly heavy user of them. Most of these machines include printing tape to record all the numbers calculated. This provides a paper record for double-checking work. Adding machines also have special memory capabilities, so users do not always need to press the function keys when calculating numbers.

Things You'll Need

  • Adding machine
  • Printing tapes
  • Load printing tape into the adding machine. Most machines let the user decide whether to use the tape.

  • Enter numbers into the machine.

  • Press the "+" key to add more numbers to the original figure.

  • Press the "Total" or "*" to compute the final figure.

  • Review the tape to look for any errors in the final total.

  • Press the "Clear" key to erase the figure and add a different set of numbers.

Tips & Warnings

  • Ten-key skills--similar to keyboard typing skills--can help users of adding machines quickly and accurately calculate large groups of figures.
  • Most adding machines must be plugged into a wall outlet. This makes them less mobile than hand-held calculators.

References

  • Photo Credit Creative Crop/Digital Vision/Getty Images
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