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The above is only partially true since not all mathematical operations are commutative. For example, subtraction is not commutative (though addition using negative numbers is).

Where an operaton is commutative it does halve the number of facts to be learned. For example, when you have learned 2+3 = 5, you do not need to learn 3+2.

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Q: How does knowing the commutative property cut the number of facts to be learned in half?
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Related questions

What property can you multiply two number in either order?

Commutative property.


Why doesn't the commutative property work for subtraction?

you can not use commutative property for subtraction because if you switch them around you will end up with a negative number.


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The commutative property means that number's positions can be changed, but their answer will stay the same. This property works for addition and multiplication. For example 5+6 = 6+5 or 3x2 = 2x3.


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The relevant properties are the commutative property, the associative property, and the property of zero (i.e., if you add zero to a number you get the same number again).


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it any number can multiply by the same its commutative


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2 plus 8 equals 8 plus 2 demonstrates the commutative property of addition


What is commutative property of addition using decimal numbers?

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