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Pre-Algebra

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Math Review of Properties of Real Numbers
Math Review of Properties of Real Numbers 150 150 Deborah

Overview Real numbers are numbers on the number line. This includes positive and negative numbers, integers, rational numbers, irrational numbers, and the number zero. Real numbers have certain mathematical properties,…

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Math Review of Applications of Percents
Math Review of Applications of Percents 150 150 Deborah

Overview Applications of percents are widely used in many areas, from figuring sale prices to measurement of increase or decrease. Knowing how to translate words into meaningful equations is an…

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Math Review of Fractions, Decimals, and Percents
Math Review of Fractions, Decimals, and Percents 150 150 Deborah

Overview: Fractions can be converted to corresponding decimals, and both fractions and decimals can also be converted to percents.  As with many equivalent expressions in mathematics, fractions, decimals, and percents…

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Math Review of Models for Subtraction
Math Review of Models for Subtraction 150 150 Deborah

Overview: Subtraction is a basic arithmetic operation. Variables, as well as more familiar numbers, can be subtracted using similar models, of take-away, the number line, and comparison. What Is the…

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Math Review of the Triangle-Sum Property
Math Review of the Triangle-Sum Property 150 150 Deborah

Overview: One of the many interesting properties of triangles is the Triangle-Sum Property.  According to the Triangle-Sum property, the sum of the measures of the angles of any triangle is…

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Math Review of Using Parentheses in Equations
Math Review of Using Parentheses in Equations 150 150 Deborah

Overview: Parentheses in equations mean that numbers and variables should be combined first, regardless of the standard order of operations.  For example, an expression such as (3 + 4)∙ 5,…

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Math Review of Adding and Subtracting Fractions
Math Review of Adding and Subtracting Fractions 150 150 Deborah

Overview: Adding and subtracting fractions is similar to adding and subtracting whole numbers, with one important difference.  The denominators must be the same, so that if the fractions do not…

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Math Review of Proportions
Math Review of Proportions 150 150 Deborah

Overview: Number statements that contain proportions are statements that fractions are equivalent. It can easily be shown that 2/4 = 3/6.   If the proportions contain variables, they can be solved…

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Solving Math Problems: Reading Problems Carefully
Solving Math Problems: Reading Problems Carefully 150 150 Deborah

Overview: It is essential to read a math problem carefully before any other steps can be taken to solve the problem.  The process of reading a math problem carefully includes…

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Math Review of Angles and Parallel Lines
Math Review of Angles and Parallel Lines 150 150 Deborah

Overview: Angles and the lines that form them are an essential part of geometry.  Understanding the relationship between parallel lines, lines that are not parallel, and the different types of…

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