Question

How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8(1 point)
Responses

(18 − 8 − 9)
Left Parenthesis 18 minus 8 minus 9 Right Parenthesis

(18 − 8) + (−949 + 79)
Left Parenthesis 18 minus 8 Right Parenthesis plus Left Parenthesis negative 9 Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 9 End Fraction Right Parenthesis

(8 − 18) + (49 + 79)
Left Parenthesis 8 minus 18 Right Parenthesis plus Left Parenthesis Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 9 End Fraction Right Parenthesis

(18 − 9 − 8) + (−49 + 79)

Answer 1

To make the expression \( 18 - 949 + 79 - 8 \) easiest to add, you should group terms that can simplify or combine easily.

The best way to group them is:

\[
(18 - 8) + (-949 + 79)
\]

This grouping allows you to first calculate \( 18 - 8 = 10 \) and then the results from the second group, which is \( -949 + 79 = -870 \).

So the expression can be calculated as:
\[
10 + (-870) = 10 - 870 = -860
\]

This clearly leads to an accessible calculation path.