Propriedades das Operações Algébricas
Compreender as propriedades das operações algébricas
Interactive Properties of Algebraic Operations Visualization
Introduction
Properties of algebraic operations are fundamental rules that govern how numbers behave under addition, subtraction, multiplication, and division. These properties are always true and form the foundation of algebra.
Key Properties:
- Commutative: Order doesn't matter (a + b = b + a)
- Associative: Grouping doesn't matter ((a + b) + c = a + (b + c))
- Distributive: Multiplication distributes over addition (a(b + c) = ab + ac)
- Identity: Special numbers that don't change values (0 for addition, 1 for multiplication)
- Inverse: Numbers that "undo" operations (opposites for addition, reciprocals for multiplication)
- Zero: Multiplying by zero always gives zero
How to Use
- Select a property from the dropdown to explore different algebraic properties
- Adjust the values of a, b, and c (if needed) using the sliders
- Watch the verification panel to see both sides of the property calculated
- Enable "Show Additional Examples" to see more examples of each property
- Try different values to verify that properties hold for all numbers
- Note: For inverse property of multiplication, a must not be zero
Property
a + b = b + a
The order of addition does not change the result
Verification
Additional Examples
• 7 + 3 = 3 + 7 = 10
• -5 + 8 = 8 + (-5) = 3
• 2.5 + 1.5 = 1.5 + 2.5 = 4
Summary of Properties
Commutative Properties:
a + b = b + a
a × b = b × a
Associative Properties:
(a + b) + c = a + (b + c)
(a × b) × c = a × (b × c)
Distributive Property:
a × (b + c) = a × b + a × c
Identity Properties:
a + 0 = a
a × 1 = a
Inverse Properties:
a + (-a) = 0
a × (1/a) = 1 (a ≠ 0)
Zero Property:
a × 0 = 0
Applications
1. Simplifying Expressions:
Use properties to rearrange and simplify algebraic expressions without changing their values.
2. Solving Equations:
Apply properties to isolate variables and solve for unknown values.
3. Mental Math:
Use commutative and associative properties to make calculations easier.
4. Factoring:
Use the distributive property in reverse to factor expressions.
Lições
Unidades de aprendizado individuais
Lições em breve