Unit 1: Number Systems and Operations
Master the fundamentals of numbers, from basic operations to advanced concepts, building a solid foundation for mathematical success
Learning Objectives
- Understand place value in whole numbers up to millions
- Perform addition and subtraction with multi-digit numbers
- Master multiplication and division facts
- Solve word problems involving basic operations
- Use estimation to check reasonableness of answers
Your Progress
Khan Academy Videos
Math Antics Videos
Prime Factorization
This video explains how to perform prime factorization, breaking down a number into its prime factors. It uses clear visuals to show how to identify and write prime factors for any number.
Watch on YouTubeLong Division
This video covers long division, showing a fast and simple method to divide large numbers. It breaks down each step, making long division easy to understand and master.
Watch on YouTubeAdding and Subtracting Fractions
This video teaches how to add and subtract fractions, explaining how to find a common denominator and perform the operations accurately.
Watch on YouTubeMultiply Fractions
This video demonstrates how to multiply fractions, showing how to multiply numerators and denominators directly and how to simplify the result.
Watch on YouTubeDividing Fractions
This video explains how to divide fractions using the concept of reciprocals. It shows a simple, step-by-step process for dividing fractions: flip the second fraction (reciprocal) and multiply. Clear visuals and examples make the method easy to understand.
Watch on YouTubeVirtual Nerd Videos
Subtracting Decimals
This video explains how to subtract decimals by lining up the decimal points and subtracting as you would with whole numbers. It provides clear examples and tips for avoiding common mistakes.
Watch on YouTubeMultiplying Decimals
This video demonstrates how to multiply decimals, focusing on ignoring the decimal points until the final step. It shows how to correctly place the decimal in the final answer.
Watch on YouTubeMultiplying Fractions
This video covers how to multiply fractions by multiplying the numerators and denominators directly. It also explains how to simplify the resulting fraction.
Watch on YouTubeAdding Fractions
This video teaches how to add fractions with the same denominator, showing how to simply add the numerators. It also covers finding a common denominator for fractions with different denominators.
Watch on YouTube