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 − 9 − 8) + (−49 + 79)
Left Parenthesis 18 minus 9 minus 8 Right Parenthesis plus Left Parenthesis negative Start Fraction 4 over 9 End Fraction plus Start Fraction 7 over 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)
What should you do if a place value is missing a number?(1 point)
Responses
Remove the last digit(s) in the number that has the additional place values.
Remove the last digit(s) in the number that has the additional place values.
Subtract without it.
Subtract without it.
Add a zero.
Add a zero.
Nothin
The correct response is:
Add a zero.
What is −18.1−5?(1 point)
Responses
23.1
23.1
−13.1
negative 13.1
13.1
13.1
−23.1
The correct response is:
-23.1
What is −189.987−30.87?(1 point)
Responses
220.857
220.857
−159.117
negative 159.117
159.117
159.117
−220.857
The correct response is:
-220.857