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24 Cards in this Set
- Front
- Back
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four-step problem-solving plan
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explore the problem
plan the solution solve the problem examine the solution |
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defining a variable
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choosing a variable to represent one of the unspecific numbers in a problem
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formula
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an equation that states a rule for the relationship between certain quantites
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equivalent equations
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have the same solution
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solve an equation
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to find all the values of the variable that make the equation a true statement
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addition property of equality
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if an equation is true and the same number is added to each side, the resulting equation is true
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subtraction property of equality
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same as addition property of equality
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multi-step equations
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to solve equations with more than one operation
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consecutive integers
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integers in counting order
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number theory
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the study of numbers and the relationships between them
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identity
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an equation that is true for every value of the variable
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proportion
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an equation stating that to ratios are equal
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ratio
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a comparision of two numbers by division
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extremes
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in the ratio a/b=c/d a and d are the extremes
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means
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in the ratio a/b=c/d b and c are the means
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scale
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a ratio or rate
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rate
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the ratio of two measurements having different units of measure
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percent of change
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when and increase or decrease is expressed as a percent
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percent of increase
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if the new number is greater than the original number
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percent of decrease
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if the new number is less than the original
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dimensional analysis
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the process of carrying units throughout a computation
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weighted average
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the sum of the product of the number of units and the value per unit divided by the sum the sum of the number of units
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mixture problems
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problems in which two or more parts are combined into a whole
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uniform motion problems
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problems where an object moves at a certian speed or rate
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