Subtraction within 10 or 20

A Simple Method for Teaching Subtraction

Subtraction is a fundamental math skill that is important for students to learn. Teaching subtraction can be a challenge, but with the right approach, it can be made easier. This method focuses on teaching subtraction within 10 or 20. It is a simple and effective way to help students understand the concept of subtraction.

Examples:

1. 8 – 5 = 3

2. 10 – 6 = 4

3. 15 – 8 = 7

4. 20 – 9 = 11

Create a Table of 10 Exercises:

1. 8 – 4 =

2. 10 – 5 =

3. 12 – 6 =

4. 15 – 7 =

5. 18 – 8 =

6. 20 – 9 =

7. 10 – 4 =

8. 15 – 6 =

9. 18 – 7 =

10. 20 – 8 =

Answers:

1. 8 – 4 = 4

2. 10 – 5 = 5

3. 12 – 6 = 6

4. 15 – 7 = 8

5. 18 – 8 = 10

6. 20 – 9 = 11

7. 10 – 4 = 6

8. 15 – 6 = 9

9. 18 – 7 = 11

10. 20 – 8 = 12

5 Multiple Choice Questions:

1. What is the answer to 8 – 5?

A. 3

B. 4

C. 5

D. 6

2. What is the answer to 10 – 6?

A. 3

B. 4

C. 5

D. 6

3. What is the answer to 15 – 8?

A. 6

B. 7

C. 8

D. 9

4. What is the answer to 20 – 9?

A. 10

B. 11

C. 12

D. 13

5. What is the answer to 18 – 8?

A. 8

B. 9

C. 10

D. 11

Key:

1. A

2. B

3. B

4. B

5. C

Conclusion:

Subtraction is an important math skill for students to learn. This method of teaching subtraction within 10 or 20 is a simple and effective way to help students understand the concept. With practice and repetition, students can become proficient in subtraction and be able to apply it to more complex problems.