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💡 Remember: Add the ones first, then the tens. If the ones add to 9 or less, there's no regrouping!
Example: 21 + 5 = 26 → ones: 1 + 5 = 6 ✓
1 Solve — No Regrouping ➕
Add the numbers. All sums are 30 or less.
20 + 7 =
21 + 5 =
14 + 13 =
22 + 6 =
11 + 15 =
23 + 4 =
16 + 12 =
20 + 10 =
24 + 3 =
13 + 14 =
25 + 4 =
17 + 11 =
2 Add — Vertical Style ⬇️
Line up the ones and tens. Add each column.
3 Tens and Ones Table 🔟
Split each number into tens and ones, then add each column.
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4 Find the Missing Number 🔍
What number goes in the blank?
21 + = 26
+ 13 = 27
22 + = 28
+ 4 = 24
15 + = 29
+ 11 = 25
23 + = 30
+ 16 = 28
5 More Vertical Addition ⬇️
Add carefully — ones first, then tens!
6 Word Problems 📖
Read each story. Write the number sentence and the answer.
- 1. There are 21 red apples and 5 green apples in a basket. How many apples altogether?
+ =
- 2. A class has 14 boys and 12 girls. How many students in the class?
+ =
- 3. Pedro scored 23 points in the first game and 6 in the second. How many points total?
+ =
- 4. A shelf had 15 books. Then 13 more books were added. How many books are on the shelf now?
+ =
Ex.1: 27, 26, 27, 28, 26, 27, 28, 30, 27, 27, 29, 28
Ex.2: 27, 29, 28, 28, 28, 29
Ex.3: 27 (2,7), 27 (2,7), 29 (2,9)
Ex.4: 5, 14, 6, 20, 14, 14, 7, 12
Ex.5: 29, 29, 27, 28, 29, 29
Ex.6: 21+5=26, 14+12=26, 23+6=29, 15+13=28