### Home > MC1 > Chapter 3 > Lesson 3.1.1 > Problem 3-5

Preston picked five playing cards and got a

What two-digit and three-digit numbers could he create that would have the greatest sum? Is there more than one possibility? What is that sum?

There are multiple ways to reach the greatest sum possible (

). Petra chose to use the combination . Which expression did you use? What two-digit and three-digit numbers could he create that would have the smallest sum? Is there more than one possibility? What is that sum?

It would be helpful to put the lowest numbers in the highest place value, because you want these numbers to be of less value.

There are also multiple ways to reach the smallest sum (

). Did you find a combination that works?

Use the eTool below to create possible combinations.

Click the link at right for the full eTool version: *3-5 HW eTool*