# How to Subtract 20% on a Calculator?

Learning to do basic math in your head is useful, but there are times when you need to make sure you are calculating the problem exactly. Calculators have now become more convenient as they are ava... Read More »
http://www.ehow.com/how_8359404_subtract-20-calculator.html

Top Q&A For: How to Subtract 20% on a Calculator

You are in Scientific Mode, change it to regular mode. Use the mode key to change mode.Try also this sequence, or check your user manualshift clr 2 mode =

## How to Subtract?

Subtraction is a simple mathematical operation that determines the difference between two numbers. Subtract smaller numbers mentally or use a pen and paper or electronic device for more complicated... Read More »
http://www.ehow.com/how_8268249_subtract.html

## How to Subtract & Borrow?

Subtracting is a task that is useful in many situations, such as balancing your checkbook, making change or calculating a date. Subtraction is taught as early as elementary school and continues thr... Read More »
http://www.ehow.com/how_8240220_subtract-borrow.html

## How to Add and Subtract Functions?

Just as you can add and subtract numbers or polynomial expressions, you can add or subtract functions. Performing simple operations on functions is no more complicated than performing those operati... Read More »

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