Borrowing Allowed: Check this box if you would like to generate subtraction problems that require borrowing. If left unchecked, no digit in the minuend will be less than the corresponding digit in the subtrahend. NOTE: It is possible to setup the parameters on this page to make it impossible to generate a problem that does not require borrowing. Amathmetic will ignore this check after a reasonable attempt to generate a problem.
Negative Numbers Allowed: Check this box if you would like to allow the subtrahend to be larger than the minuend.
Minuend Range: Specify the range of numbers to be used to generate the minuend.
Subtrahend Range: Specify the range of numbers to be used to generate the subtrahend.
Answer Space: This is the number of blank lines added to the bottom of the problem to allow space on the page for the student to write the answer.
Place Guides: Check this box to print numbers place guides. This feature is useful for beginners that have trouble keeping their columns properly aligned.