K-5 friendly lesson
Try one idea, then jump into the activity.These lessons are designed to feel short, friendly, and easy to follow.
Use place value to add two-digit numbers - with regrouping
When ones make 10 or more, regroup them into a ten and keep going.
Lesson 1
Concept
Example: 38 + 27 Ones: 8 + 7 = 15 ones Regroup 15 ones = 1 ten and 5 ones Tens: 3 tens + 2 tens + 1 regrouped ten = 6 tens Answer: 65 Place-value view keeps addition organized and clear.
Try it
Add: 1. 46 + 28 2. 57 + 19 3. 35 + 47 4. 68 + 16 5. 29 + 34