Mastering Two-Digit Addition!
Mastering Two-Digit Addition!
Learning objective
Items in this lesson
Mastering Two-Digit Addition!
Learning objective
Learning Objective
At the end of the lesson, you will be able to add two-digit numbers by adding the ones column first and then the tens column.
What do you already know about adding two-digit numbers?
Adding Ones First
To add 12 + 24, start with the ones column: 2 + 4 = 6.
Adding Tens Next
Next, add the tens column: 1 + 2 = 3. So, 12 + 24 = 36.
Example 1: 35 + 47
Add ones: 5 + 7 = 12. Write down 2, carry over 1. Add tens: 3 + 4 + 1 = 8. Result: 82.
Example 2: 58 + 26
Add ones: 8 + 6 = 14. Write down 4, carry over 1. Add tens: 5 + 2 + 1 = 8. Result: 84.
Try It Yourself!
Add 34 + 19. Remember: Add ones first, then tens!
Practice Exercise 1
Calculate: 46 + 33. Write down your steps!
Practice Exercise 2
Solve: 57 + 28. Share your answer with a friend!
Write down 3 things you learned in this lesson.
Write down 2 things you want to know more about.
Ask 1 question about something you haven't quite understood yet.
