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  2. Grade 1
  3. Subtraction (1 to 20)
  4. Subtraction Skill Builder
  5. Subtraction From 20
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)
8.1. Subtraction of Two Numbers
8.2. Subtraction Sentences
8.3. Subtract and Compare
8.4. Subtraction Skill Builder
8.4.1. Subtracting 1
8.4.2. Subtracting 2
8.4.3. Subtracting 3
8.4.4. Subtracting 4
8.4.5. Subtracting 5
8.4.6. Subtracting 6
8.4.7. Subtracting 7
8.4.8. Subtracting 8
8.4.9. Subtracting 9
8.4.10. Subtraction From 10
8.4.11. Subtraction From 20
8.5. Subtraction of Zero
8.6. Subtraction Strategies
8.7. Word Problems on Subtraction
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

Grade 1 Thailand School Math Subtraction From 20

Master this topic as part of Subtraction Skill Builder