**Synonyms:** add, add together

**Definition:** make an addition by combining numbers

**Usage:** *Add 27 and 49, please!*

**Similar words:** compute, cipher, calculate, cypher, reckon, work out, figure

**Definition:** make a mathematical calculation or computation

**Synonyms:** add, add together, add up, tally, sum, sum up, summate, tot, tot up, total, tote up

**Definition:** determine the sum of

**Usage:** *Add all the people in this town to those of the neighboring town*

**Similar words:** count, number, numerate, enumerate

**Definition:** determine the number or amount of

**Usage:** *Can you count the books on your shelf?; Count your change*