The integers in the problems here as well as the answers range between -12 and 12 for students who are starting to learn subtracting integers. Negative answers in the puzzle take a negative sign, "-", by itself in the first box. Two versions of this puzzle are provided. One version includes a number line for students who are using that to subtract integers. The other version does not include a number line for more advanced students or for later on in the school year.
Students should understand that when using the number line, they are to move to the left if subtracting a positive number and move to the right if subtracting a negative number.