EXAM QUESTIONS AND WELL ELABORATED ANSWERS
(VERIFIED ANSWERS)| 2025/2026NEW!!{ACTUAL EXAM}}
What are the steps to convert a number to Hexadecimal? -
ANSWER-Identify the largest place value and divide for the first
digit. Then subtract the powered place Value multiplied by the
the digit from the starting number. Repeat
When is a set closed under Addition? - ANSWER-When the sum
of any two natural numbers in the set is a natural number within
the set
What are the four Algorithms of Addition? - ANSWER-Partial
Sums, Column Addition, Opposite Change, Short/Standard
What is done in Partial Sum Addition? - ANSWER-Break up into
place values and add together
What is done for Column Addition? - ANSWER-Add the place
values separately then regroup
, What is done for Opposite Change? - ANSWER-Change one
number to the nearest 100's by adding/subtracting the same
amount to both numbers, then add together
What are the four techniques for mental math for Addition? -
ANSWER-
Counting on, Compatible numbers, Break apart, Opposite
change
What are the two main techniques for estimation? - ANSWER-
Rounding, Front End with Adjustment
What are the five models for Subtraction? - ANSWER-Take
Away, Separating, Comparing, Missing Addend, Moving Left on
a number line
What are the five algorithms for Subtraction? - ANSWER-
Standard, Trade First, Counting Up, Left to Right, Same Change
What is done for the counting up algorithm for Subtraction? -
ANSWER-Make the smaller number into the bigger number by
adding until the smaller number is to the nearest 10/100's then
add in the remaining values. Find the sum of the added values