g4c5

=Grade 4 Math, Chapter 5=


 * Vocabulary

__Commutative property of Multiplication__**: Numbers can be multiplied in any order and the product will be the same.

__**breaking apart**__: Mental math method used to rewrite numbers as the sum of numbers to form an easier expression.

__**Associative property of Multiplication**__: The grouping of factors can be changed and the product will be the same.

__**overestimate**__: An estimate that is greater than the exact answer.

__**underestimate**__: An estimate that is less than the exact answer.

__**product**__: The answer to a multiplication problem.

__**compatible numbers**__: Numbers that are easy to compute mentally.

__**array**__: A way of displaying objects in rows and columns.

__**rounding**__: Replacing a number with a number that tells about how many or how much.