what is 12 8/15-7+7/15+15
To solve this expression, we perform the operations in order, following the rules of arithmetic.
First, we add the whole numbers together:
12 + (-7) + 15 = 20
Next, we add the fractions together:
8/15 + 7/15 = 15/15 = 1
Finally, we add the previous result to the whole numbers:
20 + 1 = 21
Therefore, 12 8/15 - 7 + 7/15 + 15 equals 21.
How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8(1 point)
Responses
To make it easiest to add this expression, you should group the like terms together. Like terms are terms that have the same variable(s) raised to the same power(s).
In this expression, the like terms are:
18, -949, and 79.
So you should group these three terms together and then add them:
18 - 949 + 79
You can leave the -8 as it is since there are no other terms with -8 to combine with.
The grouped expression is:
(-949 + 18 + 79) - 8
What should you do if a place value is missing a number?(1 point)
If a place value is missing a number, you should fill it with a zero (0) in order to maintain the value and position of the other digits. This ensures that the place value system remains consistent and accurate.
What is −18.1−5?(1 point)
Responses
To solve the expression −18.1 − 5, we simply subtract 5 from -18.1.
-18.1 - 5 = -23.1
Therefore, −18.1 − 5 equals -23.1.
What is −189.987−30.87?
To solve the expression −189.987 − 30.87, we subtract 30.87 from −189.987.
First, subtract the decimal values:
0.987 - 0.87 = 0.117
Next, subtract the whole numbers:
189 - 30 = 159
Now combine the results:
−189.987 − 30.87 = -159.117
Therefore, −189.987 − 30.87 equals -159.117.