How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8(1 point)
Responses
(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 − 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
7 answers
(18 − 8) + (−949 + 79) is the best way to group the expression to make it easiest to add.
What should you do if a place value is missing a number?(1 point)
Responses
Nothing.
Nothing.
Subtract without it.
Subtract without it.
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.
Add a zero.
Responses
Nothing.
Nothing.
Subtract without it.
Subtract without it.
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.
Add a zero.
Add a zero.
What is −18.1−5?(1 point)
Responses
−23.1
negative 23.1
−13.1
negative 13.1
23.1
23.1
13.1
Responses
−23.1
negative 23.1
−13.1
negative 13.1
23.1
23.1
13.1
-18.1 - 5 = -23.1 or negative 23.1
What is −189.987−30.87?(1 point)
Responses
220.857
220.857
159.117
159.117
−220.857
negative 220.87
−159.117
Responses
220.857
220.857
159.117
159.117
−220.857
negative 220.87
−159.117
-189.987 - 30.87 = -220.857 or negative 220.857