Understanding Decimal Addition
Adding decimals is just like adding whole numbers, but with an important extra step!
The key is to line up the decimal points first. This makes sure you're adding tenths to tenths, hundredths to hundredths, and so on. When adding three or more decimals, take it step by step - add two at a time, then add the next one to your sum.
Steps to Add 3 or More Decimals
1️⃣ Line up all the decimal points vertically
2️⃣ Add zeros if needed to make all numbers the same length
3️⃣ Add from right to left, just like whole numbers
4️⃣ Bring down the decimal point in your answer
Let's Practice Together!
Example 1: Shopping Spree
Emma bought 3 items at the store:
$2.35
$1.80
$3.25
What is the total cost?
Example 2: Measuring Lengths
Three pieces of ribbon measure:
1.25 m
0.75 m
2.10 m
What is their combined length?
Try solving this yourself! The answer is: ?
Parent Tips 🌟
- Use real money to practice - coins and bills make decimal addition concrete and fun!
- Create a decimal menu with food prices and have your child calculate totals for different combinations.
- Play "Decimal War" with cards - deal 3 decimal numbers to each player and see who can add theirs fastest and correctly.