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
The correct answer is 12815 - 7 + 715 + 15 = 13638.
What is 12 8/15 − 7 + 7/15 + 15? Simplify your answer.(1 point)
Responses
35
35
41 15/15
20 15/15
21
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.
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)
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)
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.
If a place value is missing a number, you should add a zero in that place value.
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.