Related Clues:

• 'It just doesn't ___ up'
• Antonym of ''remove''
• Do simple computations
• Comment further
• Perform an operation
• Include in the mix
• Antonym of ''throw out''
• Reach a total, in a simple way
• Make a U-turn from subtract
• Enhance, with ''to''
• Do a summer job
• Obey sigma notation in a math class
• Work with a calculator
• 'Anything you'd like to ___?'
• Turn two fives into a ten?