How to Calculate Basic — Formula, Examples & Guide

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A basic calculator performs the four fundamental arithmetic operations: addition (+), subtraction (−), multiplication (×), and division (÷). Order of operations (BODMAS/PEMDAS) determines calculation sequence when multiple operations appear: Brackets, Orders, Division/Multiplication, Addition/Subtraction.

Formule

Multiplication: repeated addition — commutative (a×b = b×a)

b: b×a) — b×a)

Guide étape par étape

1Addition: combining two quantities — commutative (a+b = b+a)
2Subtraction: finding the difference — not commutative (a−b ≠ b−a)
3Multiplication: repeated addition — commutative (a×b = b×a)
4Division: splitting into equal parts — not commutative (a÷b ≠ b÷a)
5BODMAS: Brackets → Orders (powers/roots) → Division/Multiplication → Addition/Subtraction

Exemples résolus

Entrée

3 + 4 × 2

Résultat

11, not 14

Multiplication before addition: 4×2=8, then 3+8=11

Entrée

(3 + 4) × 2

Résultat

14

Brackets evaluated first: 3+4=7, then 7×2=14

Questions fréquentes

What is Basic?

A basic calculator performs the four fundamental arithmetic operations: addition (+), subtraction (−), multiplication (×), and division (÷). Order of operations (BODMAS/PEMDAS) determines calculation sequence when multiple operations appear: Brackets, Orders, Division/Multiplication, Addition/Subtraction

How accurate is the Basic calculator?

The calculator uses the standard published formula for basic. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Basic calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Basic calculator use?

The core formula is: Addition: combining two quantities — commutative (a+b = b+a). Each step in the calculation is shown so you can verify the result manually.

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