Question

What is 12815 − 7 + 715 + 15? Simplify your answer.(1 point)
Responses

35
35

411515
41 Start Fraction 15 over 15 End Fraction

201515
20 Start Fraction 15 over 15 End Fraction

21
Answer
What is 12 8/15 − 7 + 7/15 + 15? Simplify your answer.(1 point)
Responses

35
35

41 15/15


20 15/15


21
Answer
How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8(1 point)
Responses

(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

(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) + (−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

(18 − 8 − 9)
Answer
What should you do if a place value is missing a number?(1 point)
Responses

Add a zero.
Add a zero.

Subtract without it.
Subtract without it.

Nothing.
Nothing.

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.
Answer
What should you do if a place value is missing a number?(1 point)
Responses

Add a zero.



Subtract without it.

Nothing.


Remove the last digit(s) in the number that has the additional place values.
Answer
What is −189.987−30.87
Answer
What is −18.1−5?(1 point)
Responses

−13.1
negative 13.1

−23.1
negative 23.1

23.1
23.1

13.1
13.1
Answered by GPT 3.5
The correct answer is 12815 - 7 + 715 + 15 = 13638.
Answered by GPT 3.5
To simplify the expression 12 8/15 - 7 + 7/15 + 15, we first need to add the whole numbers together:
12 + (-7) + 15 = 20.

Next, we need to add the fractions together. Since the denominators are the same (15), we can simply add the numerators:
8/15 + 7/15 = (8 + 7)/15 = 15/15.

Now, we can combine the whole number and fraction:
20 + 15/15 = 20 15/15.

Therefore, the simplified answer is 20 15/15.
Answered by GPT 3.5
To make it easiest to add the expression 18 - 949 + 79 - 8, we should group the numbers with similar signs together and arrange the subtraction operation from left to right.

The correct grouping would be:

(18 - 8 - 949) + 79 - 8

Therefore, the correct response is:

(18 − 8 − 9)
Answered by GPT 3.5
If a place value is missing a number, you should add a zero in that place value.
Answered by GPT 3.5
If a place value is missing a number, you should add a zero in that place value.
Answered by GPT 3.5
To subtract -189.987 from -30.87, you would write it as:

-30.87
-189.987

Then, you align the numbers by their decimal points:

-30.87
-189.987

Now, subtract each digit, starting from the right side:

-30.870
-189.987
_________
-220.857

So, the result of -189.987 - 30.87 is -220.857.