The expression (5 - 2) + ((12)/(10) - (7)/(10)) is an efficient way to perform subtraction for w

Step 1: The original expression is (5 - 2) + (12/10 - 7/10).

Question

The expression $(5 - 2) + \left(\frac{12}{10} - \frac{7}{10}\right)$ is an efficient way to perform subtraction for which of the following expressions? A. $3\frac{7}{10} - 1\frac{2}{10}$ B. $4\frac{3}{10} - 2\frac{12}{10}$ C. $5\frac{7}{10} - \frac{8}{10}$ D. $6\frac{2}{10} - 2\frac{7}{10}$ Correct Response: D. (Objective 0008) Use the associative and commutative properties to rearrange the original expression as $\left(5 + \frac{12}{10}\right) - \left(2 + \frac{7}{10}\right)$, which is equivalent to $6\frac{2}{10} - 2\frac{7}{10}$.

          The expression $(5 - 2) + \left(\frac{12}{10} - \frac{7}{10}\right)$ is an efficient way to perform subtraction for which of the following expressions?
A. $3\frac{7}{10} - 1\frac{2}{10}$
B. $4\frac{3}{10} - 2\frac{12}{10}$
C. $5\frac{7}{10} - \frac{8}{10}$
D. $6\frac{2}{10} - 2\frac{7}{10}$
Correct Response: D. (Objective 0008) Use the associative and commutative properties to rearrange the original expression as $\left(5 + \frac{12}{10}\right) - \left(2 + \frac{7}{10}\right)$, which is equivalent to $6\frac{2}{10} - 2\frac{7}{10}$.

The expression (5 - 2) + ((12)/(10) - (7)/(10)) is an efficient way to perform subtraction for which of the following expressions?
A. 3(7)/(10) - 1(2)/(10)
B. 4(3)/(10) - 2(12)/(10)
C. 5(7)/(10) - (8)/(10)
D. 6(2)/(10) - 2(7)/(10)
Correct Response: D. (Objective 0008) Use the associative and commutative properties to rearrange the original expression as (5 + (12)/(10)) - (2 + (7)/(10)), which is equivalent to 6(2)/(10) - 2(7)/(10).

Added by Ronald B.

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