Extra Set

Grade 7 · Unit 2 · L8 · Version A · 936E

Add with negative numbers

Name ________________

Date ________________

Period ________________

1.
Compute 5 + (10).
Answer. 15
5 + (10) = 15.
2.
Compute −5 + (1).
Answer. −4
−5 + (1) = −4.
3.
Compute −6 + (2).
Answer. −4
−6 + (2) = −4.
4.
Compute 4 + (11).
Answer. 15
4 + (11) = 15.
5.
Compute −9 + (−11). Then Nora needs 3 of that amount. What is the total they need?
Answer. −60
−9 + (−11) = −20. Then multiply by 3: −60.
6.
Compute 6 + (−2). Then Elena needs 5 of that amount. What is the total they need?
Answer. 20
6 + (−2) = 4. Then multiply by 5: 20.
7.
Compute −11 + (−5). Then Grace needs 5 of that amount. What is the total they need?
Answer. −80
−11 + (−5) = −16. Then multiply by 5: −80.
8.
Compute −12 + (11). Then Priya needs 3 of that amount. What is the total they need?
Answer. −3
−12 + (11) = −1. Then multiply by 3: −3.
9.
Compute 2 + (−2). Then Theo needs 2 of that amount. What is the total they need?
Answer. 0
2 + (−2) = 0. Then multiply by 2: 0.
10.
Compute −11 + (5). Then Priya needs 2 of that amount. What is the total they need?
Answer. −12
−11 + (5) = −6. Then multiply by 2: −12.
11.
Think
Priya tried this problem:
Compute −7 + (−7).
Priya wrote −-14. That is not correct. What is the right answer?
Answer. −14
Priya’s answer −-14 is off. −7 + (−7) = −14.
12.
Think
Jonah tried this problem:
Compute 12 + (−10).
Jonah wrote 4. That is not correct. What is the right answer?
Answer. 2
Jonah’s answer 4 is off. 12 + (−10) = 2.

Original extra practice. Keys are computed from the items, not guessed.