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  4. Addition of Three Numbers

Grade 1 Sri Lanka School Math Addition of Three Numbers

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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)
7.1. Addition of Two Numbers
7.2. Addition of Three Numbers
7.2.1. Addition by Counting the Number of Lines
7.2.2. Addition to Make 10
7.3. Addition Sentences
7.4. Add and Compare
7.5. Addition Skill Builder
7.6. Addition of Zero
7.7. Addition Strategies
7.8. Word Problems on Addition
8. Subtraction (1 to 20)
9. Addition and Subtraction (1 to 20)
10. Addition and Subtraction of Numbers up to 100
11. Multiplication
12. Skip Counting
13. Patterns and Shapes
14. Time
15. Probability
16. Data Handling
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