Related Clues:

• Make sense (with "up")
• Do a grade-school lesson
• Postfix
• Say also
• Calculate, in a way
• Do a grade school assignment
• Find sums
• Put (numbers) together
• Extend one's fingers, maybe
• Recipe sentence starter
• Cause of fidgeting, for short
• Also include
• Word on dipsticks
• Do easy math
• Write in a postscript