Iam trying to my 3rd grader to complete the tables to find how many ways each can be solved. here’s one. ! john has 42 model cars. he wants to put 3 cars on some shelves and 2 cars on other shelves. how many ways can he display his model cars? shelves with 3 cars: shelves with 2 cars: total cars: how do i solve this?

Shelves with 3 cars: 10

Shelves with 2 cars: 6

Total:42

Shelves with 3 cars: 6

Shelves with 2 cars: 12

Total:42

There are many ways to do this. So what I did was multiply 3 by a number like 10. Then I took the 2 and multiplied it  by 3. i added the numbers 30+6=36. that doesn't work so i tried 2 multiplied by 6. 30+12=42. Hope this helped a little. :D

ur mom

step-by-step explanation: