Free Unknown Number Calculator - Determines the unknown number needed to make an equation true. This calculator has 1 input.
Common Core State Standards In This Lesson
1.OA.D.8, 3.OA.A.4, 3.OA.B.6, 3.OA.C.7
What 7 concepts are covered in the Unknown Number Calculator?
addition
math operation involving the sum of elements
equation
a statement declaring two mathematical expressions are equal
number
an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
subtract
to take away from a group or a number of things -
unknown
a number or value we do not know
unknown number
Also known as a variable
variable
Alphabetic character representing a number
Example calculations for the Unknown Number Calculator