Extra Set

Grade 7 · Unit 2 · MIA · Version A · 266A

Mixed set · Unit 2

Name ________________

Date ________________

Period ________________

1.
Use a number line: start at −8 and add −8. Where do you land?
Answer. −16
Adding a negative moves left: −8 + (−8) = −16.
2.
Compute 12 + (−11).
Answer. 1
12 + (−11) = 1.
3.
Rewrite 4 − (−5) as addition, then evaluate.
Answer. 9
Subtracting −5 is adding 5: 4 + 5 = 9.
4.
Compute −5 − (9).
Answer. −14
−5 − (9) = −14.
5.
Use a number line: start at −2 and add −3. Where do you land? Then Priya needs 5 of that amount. What is the total they need?
Answer. −25
Adding a negative moves left: −2 + (−3) = −5. Then multiply by 5: −25.
6.
Compute 10 + (−11). Then Ava needs 2 of that amount. What is the total they need?
Answer. −2
10 + (−11) = −1. Then multiply by 2: −2.
7.
Rewrite 2 − (−3) as addition, then evaluate. Then Owen needs 2 of that amount. What is the total they need?
Answer. 10
Subtracting −3 is adding 3: 2 + 3 = 5. Then multiply by 2: 10.
8.
Compute 6 + (12). Then Jonah needs 2 of that amount. What is the total they need?
Answer. 11
Common denominator and add: 512. Then multiply by 2: 11.
9.
Use a number line: start at −7 and add −4. Where do you land? Then Mei needs 5 of that amount. What is the total they need?
Answer. −55
Adding a negative moves left: −7 + (−4) = −11. Then multiply by 5: −55.
10.
Compute −5 + (−7). Then Ava needs 5 of that amount. What is the total they need?
Answer. −60
−5 + (−7) = −12. Then multiply by 5: −60.
11.
Think
Luis tried this problem:
Rewrite 3 − (−8) as addition, then evaluate.
Luis wrote 10. That is not correct. What is the right answer?
Answer. 11
Luis’s answer 10 is off. Subtracting −8 is adding 8: 3 + 8 = 11.
12.
Think
Grace tried this problem:
Compute −4 − (10).
Grace wrote −13. That is not correct. What is the right answer?
Answer. −14
Grace’s answer −13 is off. −4 − (10) = −14.

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

MIA · Mixed set · Unit 2