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Math Unit_2

Estimation and Computation Vocabulary

QuestionAnswer
Algorithm A set of step-by-step instructions for doing something, such as carrying out a computation or solving a problem.
Estimation Challenge A problem for which it is difficult, or even impossible, to find an exact answer. Your child will make his or her best estimate and then defend it.
Magnitude Estimate A rough estimate. A magnitude estimate tells whether an answer should be in the tens, hundreds, thousands, and so on.Example: Give a magnitude estimate for 56 * 32. Step 1: Round 56 to 60. Step 2: Round 32 to 30.60 * 30 = 1,800, so a magnitude est
Maximum The largest amount; the greatest number in a set of data.
Mean (average) For a set of numbers, their sum divided by the number of numbers.
Median The middle value in a set of data when the data are listed in order from smallest to largest or vice versa. If there is an even number of data points, the median is the mean of the two middle values.
Minimum The smallest amount; the smallest number in a set of data.
Mode The value or values that occur most often in a set of data.
Partial-Sums Addition A method, or algorithm, for adding in which sums are computed for each place (ones, tens, hundreds, and so on) separately and are then added to get a final answer.
Place Value A number system that values a digit according to its position in a number. In our number system, each place has a value ten times that of the place to its right and one-tenth the value of the place to its left. For example, in the number 456, the 4 is i
Range The difference between the maximum and the minimum in a set of data.
Reaction Time The amount of time it takes a person to react to something.
Trade-First Subtraction A method, or algorithm, for subtracting in which all-necessary trades between places in the numbers are done before any subtractions are carried out.
Created by: mrsthompson
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