Basic calculator for practice and tests
Check your exercise results quickly: four operations (+, −, ×, ÷), memory and history. Ideal for practice and revision — use the tool to verify your calculations, then ask your question on Math AI for a step-by-step explanation.
Quick guide to the calculator
This simple calculator helps you check results, chain operations and save time on exercises. It supports decimals, history and memory to reuse a result.
Order of operations is applied automatically: parentheses first, then multiplication and division before addition and subtraction.
- Operations: +, −, ×, ÷.
- Decimals: use a period for precise results.
- Keyboard: digits, operators, Enter for "=", Escape to clear.
Memory, history and clear
Memory holds one intermediate result between calculations.
- M+ adds the display to memory, M− subtracts.
- MR recalls the stored value, MC clears it.
- C clears the input, AC clears all.
History shows your steps and helps find errors.
Quick examples
Addition: 12 + 34 = 46.
Multiplication: 7 × 8 = 56.
Division: 144 ÷ 12 = 12.
Decimals: 7.5 + 2.3 = 9.8.
Order of operations: 2 + 3 × 4 = 14, (2 + 3) × 4 = 20.
Typical uses
- Check maths exercises or shopping bills.
- Quick conversions or ratios.
- Compare several results in history.
FAQ
- Unexpected result? Check order of operations and parentheses.
- Long decimals? Round as needed for the task.
- Need explanations? Ask the Math AI assistant on the home page.