WGU D128 MATHEMATICS FOR ELEMENTARY EDUCATORS OA PRACTICE EXAM 2026 QUESTIONS AND ANSWERS CERTIFICATION EVALUATION SET

WGU D128 MATHEMATICS FOR
ELEMENTARY EDUCATORS OA PRACTICE
EXAM 2026 QUESTIONS AND ANSWERS
CERTIFICATION EVALUATION SET

●● Associative Property.
Answer: The way in which numbers are grouped does not change their
sum or product
(2+3)+4=2+(3+4) or (2*3)*4=2*(3*4)


●● Distributive Property.
Answer: a property indicating a special way in which multiplication is
applied to addition of two or more numbers in which each term inside a
set of parentheses can be multiplied by a factor outside the parentheses,
such as a(b + c) = ab + ac


●● Front-end with adjustment.
Answer: Round the front end of each number & then check to see if the
sum of the other numbers will create another of the front #'s
965 =1000
215 =200
142 =100
65+15+42=100

, ●● Divisible by 3.
Answer: if the sum of the digits is divisible by 3


●● divisible by 6 test.
Answer: If the sum of the digits is divisible by 2 & 3


●● divisible by 9 test.
Answer: If the sum of the digits is divisible by 9


●● divisible by 4 test.
Answer: If the last 2 digits are divisible by 4


●● divisible by 8 rule.
Answer: If the last 3 digits are divisible by 8


●● intersection of sets.
Answer: the elements that are common to two or more sets


●● LCM (Least Common Multiple).
Answer: 1st GCD (divide until no remainder)
2nd multiply the first 2 #s