📝 Practice Worksheets
🛠️ Related Tool
🔑 Key Concepts
- When subtracting decimals, line up the decimal points before you begin.
- If one number has fewer decimal places, add zeros so the place values line up correctly.
- Whole numbers can be written with a decimal point and zeros, such as \(74 = 74.0\).
- Subtract from right to left just as you would with whole numbers.
- In word problems, the word difference often tells you to subtract.
✏️ Subtracting Decimals Examples
🧠 Math Vocabulary
- Decimal: a number with a decimal point that represents part of a whole.
- Difference: the answer to a subtraction problem.
- Place Value: the value of a digit based on its position in a number.
- Align: to line up numbers by place value so the decimal points are directly above one another.
- Word Problem: a math problem written in a real-world situation.
💡 Main Idea
To subtract decimals correctly, line up the decimal points first and make sure each place value matches. Sometimes that means rewriting a whole number as a decimal or adding a zero as a placeholder. Once the numbers are lined up, subtract just as you would with whole numbers and keep the decimal point in the answer aligned.
📚 What You Should Already Know
Before subtracting decimals, students should understand place value with tenths and hundredths and be able to subtract whole numbers accurately. It also helps to know that whole numbers can be written with decimals, such as \(7 = 7.0\), and that zeros can be used as placeholders without changing a number’s value.
🚀 What Comes Next
After learning to subtract decimals, students are ready for decimal word problems, multi-step decimal operations, and mixed practice with addition and subtraction. These skills also support later work with money, measurement, percent, and real-world problem solving.
🧩 Embed This Video in Your LMS
Teachers can embed this YouTube video directly into Canvas, Google Classroom, Schoology, or another learning platform. Click below to show the embed code.