Examples of Decimal Addition Problems

📚 Quick Study Guide

🔢 What are Decimals? Decimals are numbers that represent fractions of whole numbers. They are written using a decimal point. ➕ Decimal Addition Basics:
• 📏 Align the decimal points vertically. This is the most crucial step!
• 0️⃣ Add zeros as placeholders if needed, so that all numbers have the same number of digits after the decimal point.
• ⬇️ Add the numbers column by column, just like you add whole numbers.
• 📍 Bring the decimal point straight down into your answer.
💡 Key Tip: Always double-check that your decimal points are aligned correctly before adding. A misplaced decimal point can drastically change the answer. 📝 Example: To add 3.25 and 1.5, align the decimal points: 3. 25 + 1. 50 (Note the added zero as a placeholder) ------ 4. 75

➕ Practice Quiz

1. What is $2.5 + 1.3$?
   1. 1.2
   2. 3.8
   3. 3.9
   4. 2.8
2. Calculate $4.75 + 2.25$.
   1. 6.00
   2. 7.00
   3. 6.90
   4. 7.10
3. Find the sum of $0.8 + 0.2$.
   1. 0.10
   2. 1.0
   3. 0.16
   4. 1.6
4. What is $10.5 + 5.5$?
   1. 15.0
   2. 16.0
   3. 15.5
   4. 16.5
5. Solve: $1.11 + 2.22$.
   1. 3.33
   2. 3.00
   3. 3.21
   4. 3.13
6. Add $9.9 + 0.1$.
   1. 9.10
   2. 10.0
   3. 9.8
   4. 10.1
7. Compute $0.55 + 0.45$.
   1. 1.10
   2. 0.10
   3. 1.00
   4. 0.90