Finding Missing Parts in Part-Whole Models

The video tutorial explains the part-whole model in mathematics, demonstrating how to find missing parts using addition. It provides examples with numbers 5, 8, and 9, and includes an interactive exercise to reinforce learning.

In a part-whole model where the whole is 5, if you start counting from 3, how many more do you need to reach 5?

• 4

• 2

• 3

• 1

If the whole is 8 and you start counting from 5, how many more do you need to reach 8?

• 3

• 5

• 4

• 2

In a part-whole model with a whole of 9, starting from 4, how many more do you need to reach 9?

• 4

• 5

• 7

• 6

If you have a whole of 9 and start counting from 3, what is the missing part if you add 2 first?

• 3

• 4

• 6

• 5

In a part-whole model with a whole of 9, if you start from 3 and add 2, how many more do you need to reach 9?

• 3

• 4

• 5

• 6