Math for Parents
Lumastery finds where your child actually is, builds a daily session at exactly the right level, and shows you what they've mastered. You never have to wonder if you're doing it right.
Free Tools
No account needed. Start immediately.
Teaching guides, concept explainers, and curriculum reviews. These also show up inside daily sessions when your child hits a topic.
Lumastery teaches, adapts, and tracks mastery for each child automatically. You stay informed with weekly reports.
Start Free — No Card RequiredGrade level
Topic
9 articles about Decimals
A clear explanation of decimals, what they are, how they relate to fractions, and why the decimal point matters.
Decimals are not a new number system, they are fractions written in place value notation. Here is how to teach decimals so your child sees the connection and does not treat them as a separate topic.
By 6th grade, your child should handle all four operations with decimals fluently and connect decimals to fractions and percents. This guide walks you through the teaching sequence, common pitfalls, and real-world practice.
Seventh graders need fluency with decimal operations in real-world contexts and must understand the difference between terminating and repeating decimals. This guide gives homeschool parents a step-by-step teaching sequence for building decimal confidence at the 7th-grade level.
Fifth grade is when decimals become a daily tool, not just a concept. This guide covers all four operations with decimals, estimation strategies, and real-world contexts that make decimal work meaningful for 10-11 year olds.
Decimal operations follow the same rules as whole number operations, with one added challenge: the decimal point. Here is how to teach all four operations with decimals.