Related Clues:

• Puts 2 and 2 together
• Counts up
• Sums (up)
• Says further
• Sticks in
• Utilizes Chisanbop
• Throws into the mix
• Continues, conversationally
• Does simple math
• Reckons
• Puts into the mix
• Puts in extra
• Keeps talking
• Stirs in
• Does arithmetic