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Eighth Grade (Grade 8) Number Properties Questions

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Grade 8 Number Properties
  1. [math]3xx5+3xx6[/math]
  2. [math]15+21[/math]
  3. [math]5xx6-3xx3[/math]
Grade 8 Number Properties
Grade 8 Number Properties
Drew rearranged an expression to make it easier to solve. He changed 2 + (3 + 5) to
(2 + 3) + 5.

Which of the following properties tells us that it is okay for Drew to arrange the problem that way?
  1. associative property of addition
  2. distributive property of multiplication over addition
  3. identity property of addition
  4. commutative property of addition
Grade 8 Number Properties
Which problem is an example of the associative property?
  1. [math](2+3)+5=2+(3+5)[/math]
  2. [math]2(3+5)=2*3+2*5[/math]
  3. [math]2+3+5=5+2+3[/math]
  4. [math]3+0=3[/math]
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