Extra Set

Grade 7 · Unit 3 · MIA · Version A · 8EDD

Mixed set · Unit 3

Name ________________

Date ________________

Period ________________

1.
Compute (−6) × (−8).
Answer. 48
A negative times a negative is positive: 48.
2.
Compute (54) ÷ (9).
Answer. 6
54 ÷ 9 = 6.
3.
Write 12 as a decimal. Does it terminate or repeat?
Answer. 0.5 (terminating)
1 ÷ 2 = 0.5, which is terminating.
4.
Evaluate −5 + (6) × (−2).
Answer. −17
Multiply first: 6 × −2 = −12. Then −5 + −12 = −17.
5.
Compute (−2) × (−6). Then Mei needs 4 of that amount. What is the total they need?
Answer. 48
A negative times a negative is positive: 12. Then multiply by 4: 48.
6.
Compute (72) ÷ (9). Then Priya needs 2 of that amount. What is the total they need?
Answer. 16
72 ÷ 9 = 8. Then multiply by 2: 16.
7.
Is 12 a terminating or repeating decimal? Write a complete answer — Malik will compare with a partner.
Answer. terminating
Denominator 2 → terminating.
8.
Evaluate −8 + (5) × (4). Then Malik needs 5 of that amount. What is the total they need?
Answer. 60
Multiply first: 5 × 4 = 20. Then −8 + 20 = 12. Then multiply by 5: 60.
9.
Compute (−7) × (−5). Then Ava needs 2 of that amount. What is the total they need?
Answer. 70
A negative times a negative is positive: 35. Then multiply by 2: 70.
10.
Compute (−36) ÷ (−9). Then Grace needs 3 of that amount. What is the total they need?
Answer. 12
−36 ÷ −9 = 4. Then multiply by 3: 12.
11.
Think
Theo tried this problem:
Write 14 as a decimal. Does it terminate or repeat?
Theo wrote 1.25 (terminating). That is not correct. What is the right answer?
Answer. 0.25 (terminating)
Theo’s answer 1.25 (terminating) is off. 1 ÷ 4 = 0.25, which is terminating.
12.
Think
Grace tried this problem:
Evaluate 6 + (−4) × (−2).
Grace wrote 13. That is not correct. What is the right answer?
Answer. 14
Grace’s answer 13 is off. Multiply first: −4 × −2 = 8. Then 6 + 8 = 14.

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

MIA · Mixed set · Unit 3