Examlex
Between 12 and 18 months,toddlers first become capable of __________.
Positive Exponents
Indicate how many times a number, the base, is to be multiplied by itself.
Expression
A combination of symbols that represent values or operations in mathematics.
Z
Often represents a variable in mathematics or denotes the set of all integers in number theory.
Evaluate
To calculate the value of an algebraic expression by substituting variables with numerical values.
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