Grade 5 Math Worksheets: Multiplying decimals by 10, 100 or … Math worksheets: Multiplying decimals by 10, 100 or 1, 000. Below are six versions of our grade 5 decimals worksheet on multiplying decimals by 10, 100 or 1,000. Students should be able to write down the answer without making intermediary steps. These worksheets are pdf files.