Subtraction Riddle Worksheet for First Grade - Solve problems to uncover the answer to the joke about seagulls.
A subtraction riddle worksheet for first-grade students, featuring 12 subtraction problems with letters in circles below each problem. Students solve the problems and match the answers to numbers at the bottom to solve the riddle: "Why are seagulls called seagulls?" The answer is revealed in the blank spaces below.