Miss Kashef here — let's master adding 3-digit numbers together!
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Addition of 3-Digit Numbers
Hello my brilliant Grade 3 friends! Today Miss Kashef will teach you how to add numbers like 456 + 278 and 789 + 145. We will learn step-by-step with carrying, many examples, and real-life problems. You will become 3-digit addition experts!
Place Value Review
Hundreds
4
400
Tens
5
50
Ones
6
6
456 = 4 hundreds + 5 tens + 6 ones
Addition Without Carrying
234 + 145
Ones: 4 + 5 = 9
Tens: 3 + 4 = 7
Hundreds: 2 + 1 = 3
379
Addition With Carrying (Ones)
456 + 278
Ones: 6 + 8 = 14 → write 4, carry 1
Tens: 5 + 7 + 1 = 13 → write 3, carry 1
Hundreds: 4 + 2 + 1 = 7
734
More Examples with Carrying
567 + 389 = 956
728 + 195 = 923
849 + 276 = 1125
Step-by-Step Practice
458 + 367 = ?
672 + 459 = ?
Word Problems
There are 456 students in the school. 378 more join for the festival. How many students now?
834 students
You Are Doing Fantastic!
Always start from the ones column.
Carry 1 when the sum is 10 or more.
You are now very good at adding 3-digit numbers!
Real-Life Use
Adding prices in shopping
Adding scores in games
Adding distances in trips
Adding money saved
Well Done, My Smart Students! 🌟
You have learned how to add 3-digit numbers with confidence!
Keep practicing and mathematics will become your superpower!