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Standard Calculator

Professional standard calculator with basic arithmetic operations, memory functions, and percentage calculations. Perfect for everyday math tasks.

Standard Calculator

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🧮 Calculator Functions

Basic Operations

Addition (+)

Add two or more numbers together

Subtraction (-)

Subtract one number from another

Multiplication (×)

Multiply numbers together

Division (÷)

Divide one number by another

Advanced Functions

Percentage (%)

Convert to percentage or calculate percent

Square Root (√)

Find the square root of a number

Plus/Minus (±)

Toggle between positive and negative

Clear Functions

C (Clear All), CE (Clear Entry)

💾 Memory Functions

How Memory Works

Memory functions allow you to store numbers for later use in calculations. This is especially useful for complex calculations where you need to reuse intermediate results.

MS (Memory Store)

Saves the current display value to memory

MR (Memory Recall)

Displays the value stored in memory

MC (Memory Clear)

Clears the value stored in memory

M+ (Memory Add)

Adds current display to memory value

M- (Memory Subtract)

Subtracts current display from memory

Memory Indicator

Shows when memory contains a non-zero value

📋 Calculation History

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Your calculation history will appear here

Start performing calculations to see the history

💡 Tips and Tricks

Quick Percentage Calculations

  • • Enter 20, press %, get 0.2 (20% as decimal)
  • • For tip: 50 × 0.15 = 7.5 (15% tip on $50)
  • • For discount: 100 - (100 × 0.2) = 80 (20% off $100)

Memory Usage Examples

  • • Calculate tax: Price × 0.08, press MS to store
  • • Continue with other calculations
  • • Press MR to recall the tax amount when needed

Error Prevention

  • • Use CE to correct entry mistakes
  • • Use C to start completely over
  • • Check memory indicator to avoid confusion

🎯 Common Use Cases

Business & Finance

  • 💰Tax calculations and invoicing
  • 📊Profit margin analysis
  • 💳Tip and discount calculations
  • 📈Budget planning and expenses

Education & Daily Life

  • 📚Homework and exam calculations
  • 🏠Home improvement measurements
  • 🍳Recipe scaling and cooking
  • ⚖️Unit conversions and ratios

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Frequently Asked Questions

What operations does this standard calculator support?
This calculator supports all basic arithmetic operations including addition (+), subtraction (-), multiplication (×), and division (÷). It also includes percentage calculations, square root, plus/minus toggle, and full memory functions (MS, MR, MC, M+, M-).
How do I use the memory functions?
Memory functions allow you to store and recall numbers: MS (Memory Store) saves the current display value, MR (Memory Recall) displays the stored value, MC (Memory Clear) clears stored memory, M+ adds current value to memory, and M- subtracts current value from memory.
What happens when I divide by zero?
Division by zero is mathematically undefined and will display an error message. The calculator will prevent this operation and you'll need to clear the error to continue with new calculations.
Can I see my calculation history?
Yes! The calculator automatically tracks your recent calculations and displays them in the history panel. You can see up to 10 of your most recent calculations with their expressions and results.
How do I calculate percentages?
Enter a number and press the % button to convert it to a percentage (divides by 100). For example, entering "25" and pressing % gives you "0.25". You can also use this for percentage calculations in business and everyday math.
Standard Calculator