L23 · Square roots and cube roots

1. 1.

   Evaluate √9.

   Answer. 3

   3² = 9.

2. 2.

   Evaluate ∛64.

   Answer. 4

   4³ = 64.

3. 3.

   Evaluate √25.

   Answer. 5

   5² = 25.

4. 4.

   Evaluate ∛64.

   Answer. 4

   4³ = 64.

5. 5.

   Evaluate √9. Then Ava needs 2 of that amount. What is the total they need?

   Answer. 6

   3² = 9. Then multiply by 2: 6.

6. 6.

   Evaluate ∛125. Then Nora needs 3 of that amount. What is the total they need?

   Answer. 15

   5³ = 125. Then multiply by 3: 15.

7. 7.

   Evaluate √16. Then Elena needs 2 of that amount. What is the total they need?

   Answer. 8

   4² = 16. Then multiply by 2: 8.

8. 8.

   Evaluate ∛8. Then Mei needs 5 of that amount. What is the total they need?

   Answer. 10

   2³ = 8. Then multiply by 5: 10.

9. 9.

   Evaluate √25. Then Owen needs 3 of that amount. What is the total they need?

   Answer. 15

   5² = 25. Then multiply by 3: 15.

10. 10.

    Evaluate ∛64. Then Ava needs 2 of that amount. What is the total they need?

    Answer. 8

    4³ = 64. Then multiply by 2: 8.

11. 11.

    Think

    Grace tried this problem:
    Evaluate √9.
    Grace wrote 4. That is not correct. What is the right answer?

    Answer. 3

    Grace’s answer 4 is off. 3² = 9.

12. 12.

    Think

    Priya tried this problem:
    Evaluate ∛125.
    Priya wrote 10. That is not correct. What is the right answer?

    Answer. 5

    Priya’s answer 10 is off. 5³ = 125.

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