Basic Operations: Sumas

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Questions and Answers

What is the symbol used to represent addition?

  • /
  • *
  • + (correct)
  • -

Which property of addition states that the order of the numbers does not change the result?

  • Distributive
  • Elementary
  • Commutative (correct)
  • Associative

What is the result of 7 + 2 according to the examples provided?

  • 9 (correct)
  • 5
  • 8
  • 6

What is the result of 5 - 2 according to the examples provided?

<p>3 (B)</p> Signup and view all the answers

Which of the following is a property of subtraction?

<p>None of the above (D)</p> Signup and view all the answers

How can a subtraction problem be rewritten using addition?

<p>By adding the number and its opposite (C)</p> Signup and view all the answers

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Study Notes

Sumas

  • Concepto: Una suma es una operación matemática que consiste en combinar dos o más números para obtener un resultado.
  • Símbolo: El símbolo de suma es el signo "+".
  • Ejemplos:
    • 2 + 3 = 5
    • 5 + 1 = 6
    • 7 + 2 = 9
  • Propiedades:
    • Conmutativa: El orden de los números no cambia el resultado. (a + b = b + a)
    • Asociativa: Se puede sumar números en cualquier orden. ((a + b) + c = a + (b + c))
    • Elemento neutro: La suma de un número con 0 no cambia el resultado. (a + 0 = a)

Resta

  • Concepto: Una resta es una operación matemática que consiste en encontrar la diferencia entre dos números.
  • Símbolo: El símbolo de resta es el signo "-".
  • Ejemplos:
    • 5 - 2 = 3
    • 8 - 3 = 5
    • 9 - 1 = 8
  • Propiedades:
    • No conmutativa: El orden de los números cambia el resultado. (a - b ≠ b - a)
    • No asociativa: No se puede restar números en cualquier orden. ((a - b) - c ≠ a - (b - c))
    • Elemento opuesto: La resta de un número con su opuesto es 0. (a - a = 0)

Relación entre sumas y restas

  • La resta se puede considerar como la suma de un número con su opuesto.
    • Ejemplo: 5 - 2 = 5 + (-2) = 3

Addition

  • Addition is a mathematical operation that combines two or more numbers to obtain a result.
  • The symbol for addition is the "+" sign.
  • Examples:
    • 2 + 3 = 5
    • 5 + 1 = 6
    • 7 + 2 = 9
  • Properties:
    • Commutative property: The order of the numbers does not change the result.
    • Associative property: Numbers can be added in any order.
    • Neutral element: Adding a number to 0 does not change the result.

Subtraction

  • Subtraction is a mathematical operation that finds the difference between two numbers.
  • The symbol for subtraction is the "-" sign.
  • Examples:
    • 5 - 2 = 3
    • 8 - 3 = 5
    • 9 - 1 = 8
  • Properties:
    • Non-commutative property: The order of the numbers changes the result.
    • Non-associative property: Numbers cannot be subtracted in any order.
    • Additive inverse: Subtracting a number from itself results in 0.

Relationship between Addition and Subtraction

  • Subtraction can be considered as adding a number to its additive inverse.
  • Example: 5 - 2 = 5 + (-2) = 3

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