Dividing by 10, 100 and 1000 New this week for Year 5 are some quick mental division tips. Dividing by ten can be done quickly and easily by moving each digit one place to the right. A decimal point may need to be put in if moving from ones to tenths. In a similar way, dividing by 100 can be done by moving each digit two places to the right and, of course, moving each digit three places to the right will result in dividing by 1000. Go to Year 5 Division