Commutative property: a + b = b + a; example: 4 + 3 = 3 + 4
Associative property: (a + b) + c = a + (b + c); example: (1 + 2) + 3 = 1 + (2 + 3)
Closure property: The sum of two numbers of certain sets is again a number of the set.
All of the above apply similarly to addition of fractions, addition of real numbers, and multiplication of whole numbers, fractions, or real numbers.
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It is the identity property of 1.
The distributive property is not used in evaluating 49 + 9.
A property of multiplication, like addition, is that it can be put on any side of another expression, as long as it is all multiplication. For example, the commutative propety, 3x6, is the same thing as 6x3, they both equal 18. This is unique to addition and multipication, because 3-6, is not the same as 6-3, 10/5 is not the same as 5/10
Identity propety of multiplication
5(3+9) = 5x3 + 5x9 hope this helps