fewer- less than

more- greater than
digits- number
single digit - ones column only
double digits- tens and ones columns
triple digits- hundreds, tens, and ones
addition- to add together
addition sentence- a complete addition fact EX: 2+3=5
plus - the symbol for addition
subtraction - to take away a number
subtraction sentence- a complete subtraction fact 5-3=2
minus- the symbol for subtraction
equal- the symbol for the answer
sum- the total for an addition problem
addend- the numbers you add in an addition problem