Math Praxis 5003 (numbers & operations
section)
Whole Numbers - CORRECT ANSWER-a whole number is a nonnegative
number that is not expressed as a fraction or a decimal.
Integers - CORRECT ANSWER-whole number or its opposite ( a number line
can be used to demonstrate the value of an integer).
Adding integers - CORRECT ANSWER-adding numbers with the same sign
result in a sum of the same sign.
(positive)+(positive)= positive
(negative)+(negative)= negative
multiplying and adding integers - CORRECT ANSWER-positive x positive =
positive
positive X negative = negative
negative x positive = negative
negative x negative= positive
Exponents - CORRECT ANSWER-indicated the number of times a base is used
as a factor to attain a product
Ex: 2 ^5
2x2x2x2x2=32
Zero Exponents - CORRECT ANSWER-any nonzero number raised to the zero
power equals 1.
ex: 5^0= 1
The perfect square - CORRECT ANSWER-the number 5^2 is read, "five to the
second power" or more commonly, "5 squared."
perfect squares are numbers that are second powers or other numbers. They're
always zero or positive, because when you multiply a positive or a negative by
itself, the results are always positive.
The perfect squares are 0^2, 1^2, 2^2...
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