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  3. Addition and Subtraction of Numbers up to 100
  4. Addition
  5. Column Addition

Grade 1 Sri Lanka School Math Column Addition

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Grade 1
1. Shapes and Solids Around Us
2. Spatial Understanding
3. Numbers from 1 to 10
4. Numbers from 11 to 20
5. Numbers from 21 to 100
6. Numbers from 1 to 100
7. Addition (1 to 20)
8. Subtraction (1 to 20)
9. Addition and Subtraction (1 to 20)
10. Addition and Subtraction of Numbers up to 100
10.1. Addition
10.1.1. Addition Using Place Value Models
10.1.2. Column Addition
10.1.2.1. Add a One-Digit Number to a Two-Digit Number
10.1.2.2. Add Two Two-Digit Numbers
10.1.2.3. Word Problems: Add Two Two-Digit Numbers
10.2. Subtraction
11. Multiplication
12. Skip Counting
13. Patterns and Shapes
14. Time
15. Probability
16. Data Handling
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