# math - For multiplication, 4*5 = 5*4. I have used this...

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Hello Professor and class, There is no commutative property for subtraction, since it doesn't make sense to think that 6-4 = 4-6. There's a difference between having \$6 and spending \$4, and having \$4 and trying to spend \$6, so subtraction is not commutative. The commutative property of addition says that changing the order of addition of two numbers does not change the meaning. For example, 2+3 = 3+2.
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Unformatted text preview: For multiplication, 4*5 = 5*4. I have used this mnemonic device before for remembering the order of operations in math. ( Please Excuse My Dear Aunt Sally) Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. I sometimes rhyme things together to remember something that I dont want to forget....
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## This note was uploaded on 07/04/2011 for the course FINANCE FIN taught by Professor Unk during the Spring '11 term at Kaplan University.

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