Extra Set

Grade 7 · Unit 3 · Check · Version A · D139

Mid-year mixed set

Name ________________

Date ________________

Period ________________

1.
Compute (−7) × (−2).
Answer. 14
A negative times a negative is positive: 14.
2.
Compute (−6) ÷ (2).
Answer. −3
−6 ÷ 2 = −3.
3.
Write 16 as a decimal. Does it terminate or repeat?
Answer. 0.1̅6 (repeating)
1 ÷ 6 = 0.1̅6, which is repeating.
4.
Evaluate −3 + (−4) × (−5).
Answer. 17
Multiply first: −4 × −5 = 20. Then −3 + 20 = 17.
5.
Compute (−5) × (−4). Then Grace needs 3 of that amount. What is the total they need?
Answer. 60
A negative times a negative is positive: 20. Then multiply by 3: 60.
6.
Compute (−8) ÷ (−2). Then Theo needs 2 of that amount. What is the total they need?
Answer. 8
−8 ÷ −2 = 4. Then multiply by 2: 8.
7.
Write 16 as a decimal. Does it terminate or repeat? Write a complete answer — Jonah will compare with a partner.
Answer. 0.1̅6 (repeating)
1 ÷ 6 = 0.1̅6, which is repeating.
8.
Evaluate −4 + (−6) × (1). Then Theo needs 3 of that amount. What is the total they need?
Answer. −30
Multiply first: −6 × 1 = −6. Then −4 + −6 = −10. Then multiply by 3: −30.
9.
Compute (−5) × (−3). Then Luis needs 5 of that amount. What is the total they need?
Answer. 75
A negative times a negative is positive: 15. Then multiply by 5: 75.
10.
Compute (6) ÷ (3). Then Malik needs 3 of that amount. What is the total they need?
Answer. 6
6 ÷ 3 = 2. Then multiply by 3: 6.
11.
Think
Owen tried this problem:
Is 13 a terminating or repeating decimal?
Owen wrote repeating (check this). That is not correct. What is the right answer?
Answer. repeating
Owen’s answer repeating (check this) is off. Denominator 3 → repeating.
12.
Think
Theo tried this problem:
Evaluate −7 + (5) × (2).
Theo wrote -3. That is not correct. What is the right answer?
Answer. 3
Theo’s answer -3 is off. Multiply first: 5 × 2 = 10. Then −7 + 10 = 3.

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

Check · Mid-year mixed set