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ALEKS Review Objective 1-4 Questions and Answers Graded A+
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ALEKS Review Objective 1-4
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ALEKS Review Objective 1-4When Adding two numbers with the same? - answerAdd their absolute values and apply
the common signs to the sum.
When adding two numbers with different signs? - answerSubtract their smaller absolute
value from the larger absolute value. Then apply the sign of the number having the
larger absolute value.
Commutative Property- The order in which two real numbers are added or multiplied
does not affect the result. - answera+b=b+a or a.b=b.a
Associative Property-The manner n which real numbers are grouped under addition or
multiplication does not affect the result. - answer(a+b) +c= a +(b+c) or (a.b)c=a(b.c)
Distributive Property- A factor outside of the parentheses is multiplied by each term
inside the parentheses. - answera(b+c)=ab+ac or a(b.c) = ab .ac
Identity Property of Addition- Any number added to the identity element 0 will remain
unchanged. - answera+0= 0+a=a
Identity Property of Multiplication- Any number multiplied by the identity element 1 will
remain unchanged. - answera.1=1.a=a
Inverse Property of Addition- The sum of a number and its additive inverse(opposite) is
the identity element 0. - answera and (-a) are additive inverses because a+(-a)=0 and (-
a)+a=0
Inverse Property of Multiplication- The product of a number and its multiplicative
inverse(reciprocal) is the identity element 1. - answera and 1/a are multiplicative
inverses because a.1/a=1 and 1/a.a=1(provided a != 0)
What is the first step of order of operations? - answerFirst, simplify expressions with in
the parentheses and other grouping symbols.
What is an equation? - answerAn equation is a statement that indicates that two
quantities are equal. such as, x=-4
What is a linear equation? - answerA Linear Equation in one variable is an equation that
can be written in the form ax+b=0.
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