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### 10 Cards in this Set

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 Math Chapter 3-A Vocabulary Math Chapter 3-A Vocabulary operations that undo each other inverse operations using smaller numbers to estimate - the estimate is smaller than the real answer underestimate using larger numbers to estimate - the estimate is larger than the real answer overeastimate numbers that are easy to compute with mentally compatible numbers a process which tells which multiple of 10 a number is closest to rounding rules that are used to find if a number isdivisible by another number divisibility rules the number less than the divisor that remains after the division is complete remainder the number other than the remainder that is the result of dividnig quotient a whole number greater than 1 that has exactly 2 factors, 1 and itself prime number