Related Clues:

• What an accountant may do with baby out of bed?
• Computers do it best — time you invested
• Get child out of bed to do sums
• Sound logical
• Add, British-style
• Nip out of bed to perform a mathematical task
• Tally, in Britain
• Come to a total
• Calculate the total of
• Figure a bill, in slang
• Find a total
• Sum that would result in no change?
• Do a tally of
• Infant excited to perform addition
• Add final stroke, set up with nothing in it