5*17*2
The commutative property allows yu to swap the 17 and 2:
= 5*2*17
The associative property allows you to group 5 and 2 to evaluate first
= (5*2)*17
= 10*17
= 170
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You can do the easy bits first. Thus, to calculate 7*5*2, instead of doing 35*2 = 70, you can calculate 7*10 = 70. By itself, the associative property is not as useful as it is in combination with the commutative and distributive properties.
4+m
Yes, but it would be a pointless thing to do. The associative property is much more appropriate.
The associative property means that in a sum (for example), (1 + 2) + 3 = 1 + (2 + 3). In other words, you can add on the left first, or on the right first, and get the same result. Similar for multiplication. How you use this in an equation depends on the equation.
The commutative property of multiplication states that changing the order of numbers does not change the result or it's value. For example: If 3+2=5 Then 2+3=5 In multiplication: If 3x2=6 Then 2x3=6 There for 3x2=2x3