Answer: adds

AnswerCrossword Clue
ADDSPuts in
ADDSContributes
ADDSPuts on the pile
ADDSTosses in
ADDSGets to a bottom line
ADDSCrunches some numbers
ADDSAnnexes
ADDSParenthetically mentions
ADDSInterjects
ADDSDoes sums
ADDSDoes simple arithmetic
ADDSSays further
ADDSAttaches
ADDSDoes basic math
ADDSDoes some sums
ADDSDoes the math
ADDSMakes sense, with "up"
ADDSPuts two and two together
ADDSSums
ADDSMixes in
addsto be an addition
ADDSPuts 2 and 2 together
ADDSTacks on
ADDSThrows in
ADDSCounts up
ADDSDoes elementary-school homework
ADDSInserts
ADDSSums up
ADDSTots up
ADDS.. up (makes sense)
ADDSHits the + key
ADDSPractices Chisanbop
ADDSKicks in
ADDSPuts 2 and 3 together
ADDSStates further
ADDSWrites further
ADDSIncludes
ADDSComputes
ADDSFinds the bottom line
ADDSContributes more