L16 · Unit rates

1. 1.

   A pack of 5 markers costs $12.35. What is the unit price per marker?

   Answer. $2.47

   $12.35 ÷ 5 = $2.47 per marker.

2. 2.

   A pack of 10 markers costs $23.4. What is the unit price per marker?

   Answer. $2.34

   $23.4 ÷ 10 = $2.34 per marker.

3. 3.

   A pack of 4 markers costs $7.96. What is the unit price per marker?

   Answer. $1.99

   $7.96 ÷ 4 = $1.99 per marker.

4. 4.

   A pack of 6 markers costs $8.58. What is the unit price per marker?

   Answer. $1.43

   $8.58 ÷ 6 = $1.43 per marker.

5. 5.

   A pack of 5 markers costs $10.35. Luis needs 10 markers. How much will that cost at the same unit price?

   Answer. $20.7

   Unit price $2.07. 2 packs: $10.35 × 2 = $20.7.

6. 6.

   A pack of 10 markers costs $19. Theo needs 30 markers. How much will that cost at the same unit price?

   Answer. $57

   Unit price $1.9. 3 packs: $19 × 3 = $57.

7. 7.

   A pack of 10 markers costs $22.9. Owen needs 30 markers. How much will that cost at the same unit price?

   Answer. $68.7

   Unit price $2.29. 3 packs: $22.9 × 3 = $68.7.

8. 8.

   A pack of 10 markers costs $21.8. Theo needs 40 markers. How much will that cost at the same unit price?

   Answer. $87.2

   Unit price $2.18. 4 packs: $21.8 × 4 = $87.2.

9. 9.

   A pack of 8 markers costs $9.92. Nora needs 16 markers. How much will that cost at the same unit price?

   Answer. $19.84

   Unit price $1.24. 2 packs: $9.92 × 2 = $19.84.

10. 10.

    A pack of 4 markers costs $9.28. Luis needs 12 markers. How much will that cost at the same unit price?

    Answer. $27.84

    Unit price $2.32. 3 packs: $9.28 × 3 = $27.84.

11. 11.

    Think

    Jonah divided 10 ÷ 11.3 instead of price ÷ count for a 10-pack that costs $11.3. What is the unit price per marker?

    Answer. $1.13

    Unit price is cost ÷ number: $11.3 ÷ 10 = $1.13.

12. 12.

    Think

    Priya divided 10 ÷ 20.5 instead of price ÷ count for a 10-pack that costs $20.5. What is the unit price per marker?

    Answer. $2.05

    Unit price is cost ÷ number: $20.5 ÷ 10 = $2.05.

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