SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Write the given digits
[tex]1,2,3,4,5,6,7,8,9\Rightarrow100[/tex]
STEP 2: Write the different ways to use the digits to create 100.
Below are three ways to use the digits 1-9 to create 100:
[tex]\begin{gathered} 123-45-67+89----method\text{ 1} \\ 1+2+3-4+5+6+78+9----method\text{ 2} \\ 12+3-4+5+67+8+9----method\text{ 3} \end{gathered}[/tex]
