Read the following

story about the TV weatherperson and identify
as many places as possible that the weatherperson could
use addition or subtraction of integers to answer her
questions. Write and solve the number sentences she
could use.
Ms. Cloudcover, the TV weatherperson, noted that Sunday’s
temperature was 12 much warmer than the -7 on Friday
and the -2 on Saturday. She remembered that Thursday’s
temperature was 0 and checked to see how far Saturday’s temperature
had fallen from Thursday’s temperature. She made a
note to report the average temperature for the 3-day weekend
and the temperature change from Friday to Saturday and from
Saturday to Sunday. Then she began work on a report about
how the high temperatures for each day of the past week had
been over or under the normal high temperature for that day.
She wrote, Sun:-8 Mon:-5 Tues:-2 Wed:6 Thurs:3
Fri: -4 Sat: 9 She wondered whether the net effect of
the week was more or less than normal. Before she left for the
day, she noted that today’s low temperature was 9 and figured
the difference between it and the record low of -16 for
today’s date.

To get you started:

Sunday’s temperature was 12 much warmer than the -7 on Friday
12 + (-7) = +5

12 much warmer than the . . . -2 on Saturday
12 + (-2) = +10

Continue the same way.

I have a question... There is not a 5 degree differnce between 12 degrees and -7 degrees. So, wouldn't you write it 12 - (-7) = 19 degress? I am working on the same problem and trying to figure it out. I am now more confused then ever. Please no offence to Ms. Sue. I am just wondering. :)

do your own work please

The TV weatherperson, Ms. Cloudcover, could use addition or subtraction of integers in several instances in this story. Let's identify each case and write the number sentences she could use to solve them.

1. The temperature on Sunday was 12 degrees warmer than the -7 degrees on Friday. To find the temperature on Sunday, she can use the addition of integers:
-7 + 12 = 5
The temperature on Sunday is 5 degrees.

2. The temperature on Sunday was also 12 degrees warmer than the -2 degrees on Saturday. Again, she can use the addition of integers:
-2 + 12 = 10
The temperature on Sunday is 10 degrees.

3. To find how far Saturday's temperature had fallen from Thursday's temperature, she can use the subtraction of integers:
Saturday's temperature: -2
Thursday's temperature: 0
0 - (-2) = 2
Saturday's temperature fell 2 degrees from Thursday's temperature.

4. To calculate the average temperature for the 3-day weekend, she needs to find the sum and divide by 3. The number sentences would be:
Sunday's temperature: 5
Saturday's temperature: -2
Friday's temperature: -7
(5 + (-2) + (-7)) / 3 = -4/3
The average temperature for the 3-day weekend is -4/3 degrees.

5. To find the temperature change from Friday to Saturday, she can use subtraction:
Friday's temperature: -7
Saturday's temperature: -2
-7 - (-2) = -7 + 2 = -5
The temperature change from Friday to Saturday is -5 degrees.

6. To find the temperature change from Saturday to Sunday, she can again use subtraction:
Saturday's temperature: -2
Sunday's temperature: 10
10 - (-2) = 10 + 2 = 12
The temperature change from Saturday to Sunday is 12 degrees.

7. To determine if the net effect of the week was more or less than normal, she needs to find the sum of all the daily temperatures. The number sentences would be:
Sum of the daily temperatures: -8 + (-5) + (-2) + 6 + 3 + (-4) + 9
-8 + (-5) + (-2) + 6 + 3 + (-4) + 9 = -1
The net effect of the week's temperatures is -1 degrees.

8. Lastly, to figure out the difference between today's low temperature (9 degrees) and the record low of -16 degrees for today's date, she can use subtraction:
Today's low temperature: 9
Record low temperature: -16
9 - (-16) = 9 + 16 = 25
The difference between today's low temperature and the record low is 25 degrees.

By using addition and subtraction of integers in these different scenarios, Ms. Cloudcover can answer her weather-related questions.