When using Base-Ten Blocks to find three digit sums, which of the following is not involved in the concept??
A. ?Represent the place-value of each number using flats, sticks, and units.
B. ?Combine all flats together, all sticks together, and all units together.
C. ?Write the sums of all flats in one digit, all sticks in the second digit, and all units in the third digit.
D. ?Regroup units into sticks, and regroup sticks into flats.
E. ?Any additional flats beyond ten in number should be regrouped into cubes.
Answer: C
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Follow the order of operations to simplify the expression.
2
A. 
B. 
C. 
D. 
Write the indicated term of the binomial expansion.(3 - 
)6; middle term
A. -90y
B. -540y
C. -540y
D. 540y
Find the reciprocal of the number.
A. 5
B. 
C. 
D. 
Find the midpoint of the line segment whose end points are given.(3
, 9
) and (6
, 12
)
A. (
, 
)
B. (
, 
)
C. (
, 
)
D. (9
, 21
)