These space themed subtraction worksheets are leveled 1-5. The easiest is level 1, and students can work their way to level 5. The students love these aliens!
Level 1 starts with the pictures being subtracted (crossed out) for the student. Level 2 has the student cross off the correct number to find the answer. Level 3 still has the student crossing off the picture, but the numbers in the problem are higher. Level 4 has the student drawing the pictures and crossing them out, still with higher numbers. Level 5 uses numbers to 14, and still has a small space to draw, if necessary.
You can use these worksheets for leveled independent work, homework, or assessments. You can also have students do all pages, starting with level 1.