Related Clues:

• Put two and two together?
• Incorporate
• Put in with
• Kick in
• Word on a dipstick
• Use a calculator
• Do arithmetic
• Put into the mix
• Put in with the rest
• Substance partner
• Say more
• Put 2 and 2 together
• Lengthen (with "to")
• Ancient pyramid builders
• Word found on a dipstick