L20 · Percent problems

1. 1.

   Malik leaves a 15% tip on a $80 bill. How much is the tip?

   Answer. $12

   15% of 80 = 12.

2. 2.

   Priya leaves a 30% tip on a $80 bill. How much is the tip?

   Answer. $24

   30% of 80 = 24.

3. 3.

   Nora leaves a 25% tip on a $80 bill. How much is the tip?

   Answer. $20

   25% of 80 = 20.

4. 4.

   Grace leaves a 20% tip on a $160 bill. How much is the tip?

   Answer. $32

   20% of 160 = 32.

5. 5.

   Sam leaves a 20% tip on a $200 bill. How much is the tip? Then Mei needs 4 of that amount. What is the total they need?

   Answer. $160

   20% of 200 = 40. Then multiply by 4: $160.

6. 6.

   Priya leaves a 20% tip on a $80 bill. How much is the tip? Then Luis needs 4 of that amount. What is the total they need?

   Answer. $64

   20% of 80 = 16. Then multiply by 4: $64.

7. 7.

   Owen leaves a 15% tip on a $80 bill. How much is the tip? Then Sam needs 2 of that amount. What is the total they need?

   Answer. $24

   15% of 80 = 12. Then multiply by 2: $24.

8. 8.

   Theo leaves a 15% tip on a $120 bill. How much is the tip? Then Ava needs 2 of that amount. What is the total they need?

   Answer. $36

   15% of 120 = 18. Then multiply by 2: $36.

9. 9.

   Sam leaves a 25% tip on a $80 bill. How much is the tip? Then Owen needs 4 of that amount. What is the total they need?

   Answer. $80

   25% of 80 = 20. Then multiply by 4: $80.

10. 10.

    Grace leaves a 40% tip on a $160 bill. How much is the tip? Then Grace needs 5 of that amount. What is the total they need?

    Answer. $320

    40% of 160 = 64. Then multiply by 5: $320.

11. 11.

    Think

    Nora tried this problem:
    Luis leaves a 15% tip on a $160 bill. How much is the tip?
    Nora wrote $48. That is not correct. What is the right answer?

    Answer. $24

    Nora’s answer $48 is off. 15% of 160 = 24.

12. 12.

    Think

    Theo tried this problem:
    Nora leaves a 20% tip on a $200 bill. How much is the tip?
    Theo wrote $39. That is not correct. What is the right answer?

    Answer. $40

    Theo’s answer $39 is off. 20% of 200 = 40.

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