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DecimalsFree
Adding Decimals
Master the technique of adding numbers with decimal points.
20 minGrade 6
Introduction
Adding decimals is similar to adding whole numbers, with one important rule: align the decimal points.
Line Up the Decimals
Write numbers vertically with decimal points aligned. Add zeros as placeholders if needed.
Example
3.5 + 2.25: write as 3.50 + 2.25 = 5.75
Add Column by Column
Add from right to left, carrying over when necessary.
Example
1.8 + 2.7 = 4.5 (8+7=15, write 5, carry 1)
Key Takeaways
- 1Always align decimal points vertically
- 2Use zeros as placeholders when needed
- 3Carry over just like with whole numbers
Practice Problems
Test your understanding with these questions
1
What is 2.3 + 1.5?
2
Calculate: 4.25 + 3.7