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Grade 1
Addition and Subtraction of Numbers up to 100
Addition
Column Addition
Add Two Two-Digit Numbers
Add Two Two-Digit Numbers (With Carrying)

Grade 1 Canada School Math Add Two Two-Digit Numbers (With Carrying)

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Master this topic as part of Add Two Two-Digit Numbers

Grade 1

1. Shapes and Solids Around Us

1.1. Longer and Shorter

1.2. Longest and Shortest

1.3. Bigger and Smaller

1.4. Biggest and Smallest

1.5. Taller and Shorter

1.6. Tallest and Shortest

1.7. Thicker and Thinner

1.8. Thickest and Thinnest

1.9. Heavier and Lighter

1.10. Heaviest and Lightest

1.11. Near and Far

1.12. More and Less

2. Spatial Understanding

2.1. Top and Bottom

2.2. On and Under

2.3. Above and Below

2.4. Inside and Outside

2.5. Left and Right

2.6. Behind and Front

2.7. Closed and Open

2.8. Before and After

3. Numbers from 1 to 10

3.1. Counting Numbers

3.2. Number Names

3.3. Comparing Numbers

3.3.1. By Counting the Number of Objects

3.3.2. By Counting the Number of Beads on the Abacus

3.3.3. By Using Number Line

3.4. Ascending and Descending Order

3.5. Before, After, and Between

3.5.1. By Using Number Line

3.5.2. By Counting Forward and Backward

3.6. Ordinal Numbers

3.7. Number Combinations

3.7.1. To form the Number 1

3.7.2. To form the Number 2

3.7.3. To form the Number 3

3.7.4. To form the Number 4

3.7.5. To form the Number 5

3.7.6. To form the Number 6

3.7.7. To form the Number 7

3.7.8. To form the Number 8

3.7.9. To form the Number 9

3.7.10. To form the Number 10

4. Numbers from 11 to 20

4.1. Counting Numbers

4.2. Number Names

4.3. Comparing Numbers

4.3.1. By Counting the Number of Beads on the Abacus

4.3.2. By Using Number Line

4.4. Ascending and Descending Order

4.5. Before, After, and Between

4.5.1. By Using Number Line

4.5.2. By Counting Forward and Backward

5. Numbers from 21 to 100

5.1. Counting Numbers from 21 to 100

5.1.1. Counting Numbers from 20 to 29

5.1.2. Counting Numbers from 30 to 39

5.1.3. Counting Numbers from 40 to 49

5.1.4. Counting Numbers from 50 to 59

5.1.5. Counting Numbers from 60 to 69

5.1.6. Counting Numbers from 70 to 79

5.1.7. Counting Numbers from 80 to 89

5.1.8. Counting Numbers from 90 to 100

6. Numbers from 1 to 100

6.1. Complete the Number Grid from 1 to 100

6.2. Fill in the Missing Numerals

6.3. Counting up to 100 by Grouping in Tens

6.4. Place Value

6.4.1. Place Value Models up to 100

6.4.2. Identifying the Number at Ones and Tens Place

6.5. Number and Number Names up to 100

6.6. Reading Numbers on Abacus

6.7. Expanded Form

6.7.1. Numerals in Expanded Form

6.7.2. Numerals in Short Form

6.8. Identifying One-Digit and Two-Digit Numbers

6.9. Comparing Numbers

6.9.1. Comparing Numbers on a Number Line

6.9.2. Comparing Numbers Using the Rules of Comparison

6.9.3. Ascending and Descending Order

6.9.4. Find the Greatest Number

6.9.5. Find the Smallest Number

6.10. Before, After and Between up to 100

6.10.1. Before, After and Between Using Number Line

6.11. Estimate Without Counting to the Nearest Ten

7. Addition (1 to 20)

7.1. Addition of Two Numbers

7.1.1. Addition by Counting the Number of Objects

7.1.2. Addition by Counting the Number of Lines

7.1.3. Addition by Counting on Fingers

7.1.4. Addition on a Number Line (1 to 10)

7.1.5. Addition on a Number Line (11 to 20)

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

7.3.1. Write Addition Sentences by Counting the Number of Objects

7.3.2. Identify the Correct Sum

7.3.3. Related Addition Facts

7.4. Add and Compare

7.5. Addition Skill Builder

7.5.1. Adding 1

7.5.2. Adding 2

7.5.3. Adding 3

7.5.4. Adding 4

7.5.5. Adding 5

7.5.6. Adding 6

7.5.7. Adding 7

7.5.8. Adding 8

7.5.9. Adding 9

7.6. Addition of Zero

7.7. Addition Strategies

7.7.1. Adding Doubles

7.7.2. Adding Doubles Plus 1

7.7.3. Adding Doubles Minus 1

7.7.4. Adding 3 Numbers Using Doubles Facts

7.8. Word Problems on Addition

8. Subtraction (1 to 20)

8.1. Subtraction of Two Numbers

8.1.1. Subtraction by Counting Backwards

8.1.2. Subtraction by Drawing Lines and Crossing Them

8.1.3. Subtraction by Counting the Number of Objects

8.1.4. Subtraction on a Number Line (1 to 10)

8.1.5. Subtraction on a Number Line (11 to 20)

8.1.6. Subtraction by Crossing Out

8.2. Subtraction Sentences

8.2.1. Write Subtraction Sentences by Counting the Number of Objects

8.2.2. Identify Correct Subtraction Sentences

8.2.3. Related Subtraction Facts

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

8.6.1. Subtracting Doubles

8.6.2. Subtracting Doubles Plus 1

8.6.3. Subtracting Doubles Minus 1

8.7. Word Problems on Subtraction

9. Addition and Subtraction (1 to 20)

9.1. Relate Subtraction and Addition Facts

9.2. Choose the Correct Operation to Fill in the Blank

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

10.1.2.1.1. Add a One-Digit Number to a Two-Digit Number (Without Carrying)

10.1.2.1.2. Add a One-Digit Number to a Two-Digit Number (With Carrying)

10.1.2.2. Add Two Two-Digit Numbers

10.1.2.2.1. Add Two Two-Digit Numbers (Without Carrying)

10.1.2.2.2. Add Two Two-Digit Numbers (With Carrying)

10.1.2.3. Word Problems: Add Two Two-Digit Numbers

10.1.2.3.1. Word Problems: Add Two Two-Digit Numbers (Without Carrying)

10.1.2.3.2. Word Problems: Add Two Two-Digit Numbers (With Carrying)

10.2. Subtraction

10.2.1. Subtraction Using Place Value Models

10.2.2. Column Subtraction

10.2.2.1. Subtract a One-Digit Number from a Two-Digit Number

10.2.2.1.1. Subtract a One-Digit Number from a Two-Digit Number (Without Borrowing)

10.2.2.1.2. Subtract a One-Digit Number from a Two-Digit Number (With Borrowing)

10.2.2.2. Subtract Two Two-Digit Numbers

10.2.2.2.1. Subtract Two Two-Digit Numbers (Without Borrowing)

10.2.2.2.2. Subtract Two Two-Digit Numbers (With Borrowing)

10.2.2.3. Word Problems: Subtract Two Two-Digit Numbers

10.2.2.3.1. Word Problems: Subtract Two Two-Digit Numbers (Without Borrowing)

10.2.2.3.2. Word Problems: Subtract Two Two-Digit Numbers (With Borrowing)

11. Multiplication

11.1. Multiplication by Repeated addition

11.2. Multiplication as Equal Grouping

11.3. Multiplication Tables from 2 to 5

12. Skip Counting

12.1. Skip Counting by 2

12.2. Skip Counting by 3

12.3. Skip Counting by 4

12.4. Skip Counting by 5

12.5. Skip Counting by 6

12.6. Skip Counting by 7

12.7. Skip Counting by 8

12.8. Skip Counting by 9

12.9. Skip Counting by 10

13. Patterns and Shapes

13.1. Patterns

13.1.1. Introduction to Pattern

13.1.2. Pattern in Alphabets

13.1.3. Pattern in Shapes

13.1.4. Pattern in Numerals

13.1.5. Odd One Out

13.2. Shapes

13.2.1. Plane Shapes (2-D shapes)

13.2.1.1. Open and Closed Shapes

13.2.1.2. Identify Different Plane Shapes (Rectangle, Square, Circle, and Triangle)

13.2.1.3. Count the Vertices and Sides of a Plane Shape

13.2.1.4. Compare Vertices and Sides of Different Plane Shapes

13.2.1.5. Visualize a Shape After Flipping, Turning and Sliding It

13.2.2. Solid Shapes (3-D shapes)

13.2.2.1. Identify Different Solid Shapes (Cuboid, Cube, Cone, Cylinder, and Sphere)

13.2.2.2. Solid Shapes Around Us

13.2.2.3. Count the Vertices, Edges and Faces of Solid Objects

13.2.2.4. Compare the Vertices, Edges and Faces of Different Solid Objects

13.2.2.5. Identify Sliding and Rolling Objects

13.2.3. Differentiate Between 2-D and 3-D Shapes

14. Time

14.1. Concept of Day and Night

14.2. Parts of the Day(Morning, Evening, Noon, and Night)

14.3. Use of 'AM' and 'PM'

14.4. Clock

14.4.1. Basic Facts About Clocks and Time

14.4.2. Reading Time on the Clock (Interval of an Hour)

14.5. Calendar

14.5.1. Days of the Week

14.5.2. Months of the Year

14.5.3. Reading a Calendar

14.5.4. Seasons of the Year

15. Probability

15.1. More, Less and Equal Likely Events

15.2. Certain, Likely, Unlikely, and Impossible Events

16. Data Handling

16.1. Counting the Number of Shapes in a Picture

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