Order+of+operations

associative property of addition and multiplication
Addition: (a + b) + c = a + (b + c); (4 +3) +2 = 4 + (3 + 2) Multiplication: (a x b) x c= a x (b x c); (5 x 4) x 3 = 5 x (4 x 3)

n inverse operations for addition and multiplication –
n Addition and subtraction: n A + b = c 5 + 4 = 9 n c – a = b 9 – 5 = 4 n c – b = a 9 – 4 = 5 n Multiplication and Division A x b = c 9 x 3 = 27 C a = b 27 9 = 2 C b = a 27  3 = 9