Pre-Algebra
Lynn Marecek, MaryAnne Anthony-Smith
Pre-Algebra - A book resource
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More resources on Decimals
Khan Academy Decimals
Interactive free lessons and exercises, top Reddit rec in r/learnmath
Pre-Algebra: Decimals
Learn decimal operations, conversions, and problem-solving with this free pre-algebra course by Sal Khan. Master decimals now!
khanacademy.org
Khan Academy is a free online learning platform with instructional videos, practice problems, and personalized progress tracking across many subjects, including math topics like decimals. It offers step-by-step decimal lessons, interactive exercises, quizzes, and mastery-based pacing to help learners master decimals.
mathsisfun.com
MathsIsFun is a beginner-friendly math learning site that explains core concepts with clear, step-by-step tutorials and interactive activities. It covers decimals (place value, operations, conversions) along with other topics and offers practice problems, worksheets, and quizzes to reinforce understanding.
mathworld.wolfram.com
Wolfram MathWorld is a comprehensive online math encyclopedia with in-depth articles on decimals and other math topics, offering clear definitions, formulas, explanations, and worked examples.