g4c6

=Grade 4 Math, Chapter 6=


 * Vocabulary

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

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

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

__**Range**__: The difference between the greatest value and the least value in a data set.

__**Partial Product**__: Products found by breaking one factor in a multiplication problem into hundreds, tens and ones and so on and then multiplying each of those by the other factor.