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🧮 Addition (+)

• Meaning: Putting two or more numbers together to find the total or sum.

• Symbol: + (plus)

• Example:
  5
  +
  3
  =
  8
  
  5 + 3 = 8
  
  5+3=8

• Properties:

  • Commutative Property: Order doesn’t matter → 4
    +
    6
    =
    6
    +
    4
    
    4 + 6 = 6 + 4
    
    4+6=6+4

  • Associative Property: Grouping doesn’t matter → (
    2
    +
    3
    )
    +
    4
    =
    2
    +
    (
    3
    +
    4
    )
    
    (2 + 3) + 4 = 2 + (3 + 4)
    
    (2+3)+4=2+(3+4)

  • Adding Zero: Any number + 0 = the same number → 7
    +
    0
    =
    7
    
    7 + 0 = 7
    
    7+0=7

➖ Subtraction (−)

• Meaning: Taking away one number from another to find the difference.

• Symbol: − (minus)

• Example:
  9
  −
  4
  =
  5
  
  9 − 4 = 5
  
  9−4=5

• Properties:

  • Not Commutative: Order matters → 8
    −
    3
    ≠
    3
    −
    8
    
    8 − 3 \neq 3 − 8
    
    8−3=3−8

  • Subtracting Zero: Any number − 0 = the same number → 6
    −
    0
    =
    6
    
    6 − 0 = 6
    
    6−0=6

  • Subtracting a Number from Itself: Always 0 → 5
    −
    5
    =
    0
    
    5 − 5 = 0
    
    5−5=0