Download Name: Date: Teacher: ______ Period: ______ Section 2.2

Name: ____________________________________________
Date: ________________________
Teacher: ____________ Period: _______ Section 2.2-2.3 Practice Add & Subtract Real Numbers
Find the sum or difference using your calculator.
1. (–7) + 5 = ________
7. –13 + (–8)=_________
2. –9.6 – (–14.8) = __________
8. 17.6 + (–4.8) = ______
3. 19 + (–5) = ________
9. (–7.25) + 6.3 + (–2.5) = ________
4. 14 + (–2) = ________
10. 8 5 + (−6 3) = __________
5.
3
8
−
7
16
= _________
6. –17.6 – (–3.5)= _________
2
5
1
5
11. -4 9 +2 6 = __________
5
7
12. − 6 − ( − 8 ) = _________
Evaluate the expression when x = -8.25 and y = 6.9.
13. x – y + 6.1 = _______
15. 7.9 – y + x = _____________
14. 8.25 – (–x) + y = ___________
16. -6.3 + x – (–y) = ____________
17. Florist A florist wants to order roses more accurately from a wholesaler. The florist keeps
a record of the total number of roses sold in a week. Determine the change in the
number of roses each week. Find the total of
these changes to determine the total change
in the number of roses over the 4 weeks.
18. Barometer A barometer is a mercury-filled instrument that measures air pressure. This
instrument is used to predict weather changes by recording the height of the mercury
(in inches) inside the barometer. The changes in the height of the mercury in a
barometer over a 48-hour period are shown in the table. What is the total change in
the barometer reading during the 48hour period?
19. Walking Dogs You have a part-time job walking dogs during the summer. The home of
the first dog is about 3.5 miles west of your house. The home of the second dog is
about 5.5 miles east of the home of the first dog. The home of the last dog is 3.25 miles
west of the home of the second dog. How far away from your house are you after you
walk the last dog?
20. Ocean Creatures The maximum depths at which some deep-sea creatures can be
found are shown in the table. Which two creatures have the largest difference
between their maximum depths? What is the difference? Which two creatures have
the smallest difference between their maximum depths? What is the difference?
21. Company Profits The graph shows the profits earned by a small company during the
first six months of the year. Did the company make a positive
profit for the first six months? If so, how much?