This excel spreadsheet generates 16 unique questions, which can be printed out as homework, or class tests. Each pupil can have a different set of questions, so no copying! Just press F9 to generate a new set of numbers. Answers print out on a separate sheet, pupils can mark their own or each others. Includes questions with decimals, from 123 x 45 = to 2.345 x 6.7 = (but set out vertically). Answers show all working out.