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This unit lays a foundation for later units.

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Unit 1 Lesson 1: Exponent and Rounding Whole Numbers

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Unit 1 Lesson 2: Multiplication

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Unit 1 Lesson 3: Division

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Unit 1 Lesson 4: Geometry Basics

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Unit 1 Lesson 5: Divisibility Test

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Unit 1 Lesson 6: Prime Number

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Unit 1 Lesson 7: Greatest Common Factor and Least Common Multiple

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Unit 1 Lesson 8: Order of Operations Part I (involving positive numbers only)

- Exponent and Rounding Whole Numbers Lecture Notes
- Exponent Definition Video Lecture
- Round Whole Numbers Video Lecture
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- Division Lecture Notes
- Division Video Lecture 1
- Division Video Lecture 2
- Remainder Video Lecture
- Divide by Zero Video Lecture
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- Geometry Basics Lecture Notes
- Geometry Basics Video Lecture
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- Divisibility Test Lecture Notes
- Divisibility Test Video Lecture
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- Greatest Common Factor and Least Common Multiple Lecture Notes
- Greatest Common Factor Video Lecture
- Least Common Multiple Video Lecture 1
- Least Common Multiple Video Lecture 2
- Least Common Multiple Video Lecture 3
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3 means you won $3.

-4 means you lost $4.

3+(-4) means you won $3 and then lost $4, a net loss of $1. This is why 3+(-4)=-1.

Make sense?

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Unit 2 Lesson 1: Integers and Absolute Value

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Unit 2 Lesson 2: Add and Subtract Integers

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Unit 2 Lesson 3: Multiply and Divide Integers

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Unit 2 Lesson 4: Order of Operations Part II (involving negative numbers and absolute values)

-4 means you lost $4.

3+(-4) means you won $3 and then lost $4, a net loss of $1. This is why 3+(-4)=-1.

Make sense?

- Integers and Absolute Value Lecture Notes
- Introduction to Negative Numbers Video Lecture
- Absolute Value Video Lecture
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Every one loves fraction! :) We will study fraction and mixed number operations in this unit.

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Unit 3 Lesson 1: Fraction Definition and Equivalent Fractions

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Unit 3 Lesson 2: Add/Subtract Fractions

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Unit 3 Lesson 3: Multiply Fractions

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Unit 3 Lesson 4: Divide Fractions

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Unit 3 Lesson 5: Introduction to Mixed Numbers

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Unit 3 Lesson 6: Add/Subtract Mixed Numbers

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Unit 3 Lesson 7: Multiply/Divide Mixed Numbers

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Unit 3 Lesson 8: Order of Operations involving Fractions

- Add/Subtract Fractions Lecture Notes
- Add Fractions with Common Denominators Video Lecture
- Add Fractions with Different Denominators Video Lecture 1
- Add Fractions with Different Denominators Video Lecture 2
- Add Fractions with Different Denominators Involving Negative Numbers
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- Multiply Fractions Lecture Notes
- Multiply Fractions Video Lecture
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- Divide Fractions Lecture Notes
- Divide Fractions Video Lecture
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- Introduction to Mixed Numbers Lecture Notes
- Introduction to Mixed Numbers Video Lecture
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- Add/Subtract Mixed Numbers Lecture Notes
- Add Mixed Numbers with Common Denominators Video Lecture
- Add Mixed Numbers with Different Denominators Video Lecture
- Add Mixed Numbers with Common Denominators Involving Negative Numbers Video Lecture
- Add Mixed Numbers with Uncommon Denominators Involving Negative Numbers Video Lecture
- Subtract Mixed Numbers Video Lecture 1
- Subtract Mixed Numbers Video Lecture 2
- Subtract a Fraction from a Whole Number Video Lecture
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The key to understand decimals is to think about money, as we use money every day. For example, 0.05 means 5 cents, and 1.1 means a dollar and 10 cents.

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Unit 4 Lesson 1: Introduction to Decimals

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Unit 4 Lesson 2: Add/Subtract Decimals

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Unit 4 Lesson 3: Multiply/Divide Decimals

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Unit 4 Lesson 4: Decimals and Fractions

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Unit 4 Lesson 5: Square Root

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Unit 4 Lesson 6: Mean, Median and Mode

- Add/Subtract Decimals Lecture Notes
- Add Decimals Video Lecture
- Subtract Decimals Video Lecture
- Add/Subtract Decimals Involving Negative Numbers Video Lecture 1
- Add/Subtract Decimals Involving Negative Numbers Video Lecture 2
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- Decimals and Fractions Lecture Notes
- Change Decimal to Fraction Video Lecture 1
- Change Decimal to Fraction Video Lecture 2
- Change Fraction to Decimal Video Lecture
- Convert between Fractions and Decimals Video Lecture
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- Square Root Lecture Notes
- Introduction to Square Root Video Lecture
- Evaluate Square Root Video Lecture
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- Mean, Median and Mode Lecture Notes
- Mean, Median and Mode Video Lecture
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Rate and proportion are used every day. For example, a car drives at 50 miles per hour, which is an example of rate.

If the owner of a property worth $300,000.00 pays $2,000.00 in property tax, how much tax should the owner of a property worth $400,000.00 pay? We can solve this problem with proportion.

Proportional thinking is critical in later math lessons.

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Unit 5 Lesson 1: Rate and Ratio

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Unit 5 Lesson 2: Proportion

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Unit 5 Lesson 3: Unit Conversion

If the owner of a property worth $300,000.00 pays $2,000.00 in property tax, how much tax should the owner of a property worth $400,000.00 pay? We can solve this problem with proportion.

Proportional thinking is critical in later math lessons.

- Rate and Ratio Lecture Notes
- Ratio Video Lecture
- Rate and Ratio Video Lecture
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We use percent almost every day: A product is 30% off; the town's population increased by 30%; you just got a 5% raise, ... It's obvious how important percent is.

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Unit 6 Lesson 1: Introduction to Percent

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Unit 6 Lesson 2: Percent Formula

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Unit 6 Lesson 3: Percent Word Problems

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Unit 6 Lesson 4: Percent of Increase/Decrease

- Introduction to Percent Lecture Notes
- Introduction to Percent Video Lecture
- Change Percent to Decimal Video Lecture
- Change Percent to Fraction Video Lecture
- Change Decimals/Fractions to Percent Video Lecture
- Percent, Fraction and Decimal Conversions Video Lecture
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- Percent Formula Lecture Notes
- Type I Percent Formula Problems Video Lecture
- Type II Percent Formula Problems Video Lecture
- Type III Percent Formula Problems Video Lecture
- Solve Percent Problems with Proportion Video Lecture 1
- Solve Percent Problems with Proportion Video Lecture 2
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