Gina has 20 groups of 10 pencils. 137 are sharpened. How many dull pencils does Gina have?
Shannon and Bryan went shopping. They each bought 10 new shirts. Shannon returned 3 of her new shirts to the store. How many shirts do Shannon and Bryan have?
Ben and Tim went fishing. They each caught 11 fish. For dinner, they each ate 2 fish. How many fish do Ben and Tim have now?