Adding and Subtracting Numbers up to 20

A Guide to Help Students Learn Basic Math Skills

Method:

Adding and subtracting numbers up to 20 is a basic math skill that all students should learn. To help students learn this skill, it is important to provide them with clear instructions and examples. First, explain to students that adding and subtracting numbers up to 20 involves using the basic operations of addition and subtraction. Then, provide students with examples of how to add and subtract numbers up to 20. Finally, provide students with practice exercises to help them master the skill.

Examples:

1. To add two numbers up to 20, simply add the two numbers together. For example, to add 8 + 12, simply add 8 + 12 = 20.

2. To subtract two numbers up to 20, subtract the smaller number from the larger number. For example, to subtract 12 – 8, subtract 8 from 12 = 4.

Create a Table of 10 Exercises:

1. 8 + 12 =

2. 15 – 7 =

3. 10 + 9 =

4. 18 – 10 =

5. 6 + 14 =

6. 19 – 8 =

7. 11 + 9 =

8. 17 – 10 =

9. 5 + 15 =

10. 20 – 12 =

Answers:

1. 20

2. 8

3. 19

4. 8

5. 20

6. 11

7. 20

8. 7

9. 20

10. 8

5 Multiple Choice Questions:

1. What is the answer to 8 + 12?

A. 10

B. 15

C. 20

D. 25

Answer: C. 20

2. What is the answer to 15 – 7?

A. 8

B. 10

C. 12

D. 15

Answer: A. 8

3. What is the answer to 10 + 9?

A. 19

B. 20

C. 21

D. 22

Answer: A. 19

4. What is the answer to 18 – 10?

A. 8

B. 10

C. 12

D. 15

Answer: A. 8

5. What is the answer to 6 + 14?

A. 10

B. 15

C. 20

D. 25

Answer: C. 20

Key:

1. C. 20

2. A. 8

3. A. 19

4. A. 8

5. C. 20

Conclusion:

Adding and subtracting numbers up to 20 is a basic math skill that all students should learn. By providing students with clear instructions, examples, and practice exercises, they can easily master this skill. With practice, students will be able to add and subtract numbers up to 20 with ease.