4. Start with integer 3 and subtract 10. From the answer, subtract 1. Then multiply the answer by -3. Now subtract -20 from the answer. Then divide by -2. What do you get?
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Perimeter and Area of Polygons
Perimeter and Area of Polygons
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Perimeter of Polygons, Area of Rectangles, Parallelograms, Triangles and Trapezoids. Both metric and English units are used in these math lessons.
Circumference and Area of Circles
Circumference and Area of Circles
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Geometry, parts of a circle, radius, diameter, Pi, Circumference of Circles, and Area of Circles. Both metric and English units are used in these lessons.
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Elementary Math Lessons
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These lessons on number theory include the following topics: Factors, Multiples, Prime and Composite Numbers, Divisibility, Exponents, and Patterns with Exponents. Connections to geometry and the real world.
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Introduction to Fractions
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Introduction, Classify Fractions, Equivalent Fractions, Simplify, Compare and Order. Convert Fractions to Mixed Numbers. Convert Mixed Numbers to Fractions. Math instruction is visual and conceptual.
Add and Subtract Fractions and Mixed Numbers
Add and Subtract Fractions and Mixed Numbers
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Add and subtract fractions with like and unlike denominators, LCD, add and subtract mixed numbers, solve real-world problems. These lessons use both visual and conceptual approaches.
Multiply and Divide Fractions and Mixed Numbers
Multiply and Divide Fractions and Mixed Numbers
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Multiply fractions with and without cancelling, multiply mixed numbers, reciprocals, divide fractions, divide mixed numbers, solving real-world problems. Instruction is visual and conceptual.
Adding and Subtracting Decimals
Adding and Subtracting Decimals
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Introduction, Read and Write, Compare and Order Decimals. Estimate Decimal Sums and Differences. Add and Subtract, Solve Decimal Word Problems.
Multiplying and Dividing Decimals
Multiplying and Dividing Decimals
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Estimate Decimal Products and Quotients. Multiply and Divide Decimals by Whole Numbers and by Decimals. Round Decimal Quotients, Solve Word Problems.
Understanding Percent
Understanding Percent
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Meaning of Percent, Writing Fractions and Decimals as Percents, Writing Percents as Decimals and Fractions, Percents Less Than 1 or Greater Than 100.
Consumer Math with Percent Applications
Consumer Math with Percent Applications
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Percent applications are presented, including Percentages and Proportions (IS over OF), Discount, Sale Price, Interest, Commission, Sales Tax, and Percent Change. Many connections to money in these lessons.
Integer Properties and Arithmetic
Integer Properties and Arithmetic
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Integer properties and the number line. Absolute Value, Compare, Order, Add, Subtract, Multiply and Divide. Mixed Review of Arithmetic Operations.
Probability
Probability
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Experiments, Outcomes, Certain and Impossible Events, Sample Spaces, Complement, Mutually Exclusive Events, Addition Rules, Independent and Dependent Events, Conditional Probabilities.
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Pre-Algebra
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Order of Operations with Whole Numbers, Integers and Exponents. PEMDAS, Writing Algebraic Expressions and Writing Algebraic Equations.
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Mean Median Mode
Mean Median Mode
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Mathematical Logic
Mathematical Logic
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Negation, Conjunction and Disjunction. Conditional, Compound, and Biconditional Statements. Tautologies and Equivalence. Truth tables used in all lessons.
Sets and Set Theory
Sets and Set Theory
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Basic definitions and notation, types of sets, equality, Venn diagrams, subsets, Universal set, set-builder notation, complement, intersection and union. Many visuals in these lessons.
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