Adding and Subtracting Integers Find each sum 1) 3 + (?7) 2) (?10) + 12 3) (?5) + 8 4) (?4) + 6 5) (?8) + 12 6) 6 + (?11) 7) (?7) + 2
Worksheet by Kuta Software LLC Kuta Software - Infinite Pre-Algebra Adding/Subtracting Integers Find each sum 1) (?12) + 7 2) (?10) + (?7)
Worksheet by Kuta Software LLC Kuta Software - Infinite Algebra 1 Adding Positive and Negative Numbers Find each sum 1) (?7) + 9 2) (?8) + (?1)
Question 6: Write down ive subtractions that have an answer of 2 You must use at least one negative number per calculation
Adding Integers with Different Signs Practice and Problem Solving: D Show the addition on the number line Then write the sum The first
For each exercise, identify the integer that results from combining the two arrows TOPIC 5-e: Adding Integers: Unlike Signs
PURPOSE: To practice adding and subtracting integers with number lines positives and “-” signs for negatives: Adding Two Positives:
Integers- A set of positive and negative whole numbers ADDING INTEGERS SAME SIGN- Add and Keep the Sign Add the absolute value of the numbers and
Integers are the negative numbers, zero, and positive numbers Addition of integers The rule for adding two integers depends on whether the signs of the
Adding Integers Rule: If the signs are the same, add and keep the same sign (+) + (+) = add the numbers and the answer is positive
1) −4 2) 2 3) 3 4) 2 5) 4 6) −5 7) −5 8) −17 9) −13 10) 2 11) −1 12) 0 13) −1 14) 7 15) −9 16) 9 17) 2 18) 0 19) −1 20) 12 21) −3 22) 1 23) 6
Adding Integers with Different Signs Practice and Problem Solving: D Show the addition on the number line Then write the sum The first one is done for you 1
PURPOSE: To practice adding and subtracting integers with number lines and algebra tiles 12 Write a rule that works for adding integers with different signs
integers with different signs, and (c) an integer and its opposite Use what you learned about adding integers to complete Exercises 8 –15 on page 12 English
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2603_61_2PracticeD.pdf
Name ________________________________________ Date __________________ Class __________________
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9
Adding Integers with Different Signs
Practice and Problem Solving: D
Show the addition on the number line. Then write the sum. The first one is done for you. 1. 2 (3) 2. 3 (4) ________________________________________ ________________________________________
Find each sum. The first one is done for you.
3. 4 (9) 4. 7 (8) 5. 2 1 ________________________ _______________________ ________________________ 6. 5 7 7. 9 (5) 8. 1 9 ________________________ _______________________ ________________________ 9. 2 (7) 10. 6 (4) 11. 15 9 ________________________ _______________________ ________________________
Solve. The first one is done for you.
12. The temperature dropped 12F in 8 hours. If the final temperature was
7°F, what was the starting temperature? _________________________________________________________________________________________
13. At 3 P.M., the temperature was 9F. By 11 P.M., it had dropped 31F.
What was the temperature at 11 P.M
.? _________________________________________________________________________________________ 14. A submarine submerged at a depth of 40 feet dives 57 feet more.
What is the new depth of the submarine?
_________________________________________________________________________________________ 15. An airplane cruising at 20,000 feet drops 2,500 feet in altitude. What is the airplane's new altitude? _________________________________________________________________________________________
LESSON 1-2
1 5F 5
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309
2. a. negative b. 7 1 8 c. 8 3. a. negative b. 5 2 7 c. 7 4. a. positive b. 6 4 10 c. 10 5. 13 6. 16 7. 37 8. 41 9. 24
10. 52
Reading Strategies
1. Each counter represents 1. 2. Each counter represents a dollar that
Sarah withdrew. The counters make it is
easier to see how many dollars Sarah withdrew each day. 3. You can simply count the counters to find the sum. 4.3 (5) (4) (1) 13
Success for English Learners
1. positive counters 2. because you are adding a negative number 3. Answers will vary. Sample answer: Erica bought stamps three times this week. She bought 5 stamps on Monday, 3 stamps on
Wednesday, and 4 stamps on Friday.
How many stamps did Erica buy this
week? (5 3 4 12)
LESSON 1-2
Practice and Problem Solving: A/B
1. 1 2. 1 3. 5 4. 1 5. 1 6. 3 7. 2 8. 4 9. 8
10. 2
11. 43
12. 21
13. 29
14. 10
15. 11F
16. 3 yards
17. 9 points
18. a. negative
b. loss of 6, or 6
Practice and Problem Solving: C
1. negative; 10 2. positive; 5 3. negative; 7 4. positive; 5 5. positive; 6 6. positive; 15 7. negative; 1 8. positive; 1 9. the same sign as the integers
10. It is the sign of the integer whose absolute
value is greater.
11. 15
12. 24
13. 13
14. 30
15. 0
16. 18
17. 5F
18. $150
19. Rita; 11 points
Practice and Problem Solving: D
1. 1 2. 7 3. 5 4. 1 5. 1
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310
6. 12 7. 4 8. 8 9. 5
10. 10
11. 6
12. 5F
13. 22F
14. 97 ft
15. 17,500 ft
Reteach
1. subtract; the numbers have different signs 2. negative 3. 4 4. 5 5. 1 6. 4 7. 2 8. 5 9. 9
10. 10
11. 16
12. Sample answer: I look at 3 and 9 and see
that 9 3. Since the sign on 9 is negative, the answer is negative.
Reading Strategies
1. 0 2. right; 6 3. left; 4 4. 2 5. 0 6. left; 5 7. left; 3 8. 8
Success for English Learners
1. negative number 2. No, the sum can be positive or negative. 3. negative 4. positive
LESSON 1-3
Practice and Problem Solving: A/B
1. 5 2. 6 3. 10 4. 5 5. 4 6. 24 7. 0 8. 46 9. 1
10. 42
11. 6
12. 26
13. 30
14. 5
15. 9C
16. 14F
17. 4C
18. 7C
19. 240C
Practice and Problem Solving: C
1. 16 2. 22 3. 7 4. 0 5. 29 6. 9 7. 2 8. 0 9. 10
10. when x y
11. when x y
12. 12F, 2F
13. Pacific; 2,400 m
Integers Documents PDF, PPT , Doc