Add a two-digit and a one-digit number – without regrouping
key notes :
💡One-digit numbers are the numbers between 0 and 9.
🥏In the last few lessons, you learned to add one-digit numbers, like this:
- 3 + 4 = 7
🥏You also learned to add two-digit numbers, like this:
- 10 + 30 = 40
🥏 Two-digit numbers are the numbers between 10 and 99.
💡 Now, let’s learn to add one-digit numbers to two-digit numbers. 😺
Adding One- and Two-Digit Numbers
💣Learn with an example💣
Add.
2+27= __
You can count up to add. It is easier to start with the larger number. Start from 27 and count up 2:
27, 28, 29
2+27=29
The sum is 29.
Add.
14+4 =
solution
You can count up to add. It is easier to start with the larger number.
Start from 14 and count up 4:
14, 15, 16, 17, 1814+4=18
The sum is 18.
Add.
26+1=
You can count up to add. It is easier to start with the larger number. Start from 26 and count up 1:
26, 27
26+1=27
The sum is 27.
Let’s practice!🖊️
