How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8 (1 point)
choices
A. (18 − 9 − 8) + (−49 + 79)
B. (18 − 8 − 9)
C. (8 − 18) + (49 + 79)
D. (18 − 8) + (−949 + 79)
The correct way to group the expression to make it easiest to add is choice B.
(18 - 8 - 9)
What should you do if a place value is missing a number?(1 point)
If a place value is missing a number, you can either leave it empty or fill it with a zero.
What should you do if a place value is missing a number?(1 point)
A. Subtract without it.
B. Add a zero
C. Remove the last digit(s) in the number that has the additional place values.
D.Nothing
B. Add a zero
What is -18.1-5? (1 point)
A. -23.1
B. 13.1
C. -13.1
D. 23.1
The correct answer is C. -13.1
What is -189.987-30.87 (1 point)
A. 159.117
B.-159.117
C.220.857
D.-220.857