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What is 1 + 3?
Saxon math les 6 - 10
numbers added in an addition problem
any process for solving a mathematical problem
commutative property of addition
changing the order of addends does not change their sum (a + b = b + a)
identity property of addition
the sum of any number and 0 is equal to the initial number (a + 0 = a)
the result of addition
numbers that describe position or order (first, second . . .)
the result of subtraction
a group of three numbers related by addition & subtraction or by multiplication & division
operations that "undo" one another
a number sentence that uses the symbol = to show that two quantities are equal
the top (or largest) number in a subtraction problem
the bottom (or smaller) number in a subtraction problem