Prep · Division with two-digit divisors and decimals

1. 1.

   Divide 375 ÷ 15.

   Answer. 25

   15 × 25 = 375, so 375 ÷ 15 = 25.

2. 2.

   Find 27.3 ÷ 7.

   Answer. 3.9

   27.3 ÷ 7 = 3.9.

3. 3.

   Divide 192 ÷ 12.

   Answer. 16

   12 × 16 = 192, so 192 ÷ 12 = 16.

4. 4.

   Find 15 ÷ 6.

   Answer. 2.5

   15 ÷ 6 = 2.5.

5. 5.

   Divide 300 ÷ 25. Then Elena needs 3 of that amount. What is the total they need?

   Answer. 36

   25 × 12 = 300, so 300 ÷ 25 = 12. Then multiply by 3: 36.

6. 6.

   Find 16 ÷ 5. Then Malik needs 4 of that amount. What is the total they need?

   Answer. 12.8

   16 ÷ 5 = 3.2. Then multiply by 4: 12.8.

7. 7.

   Divide 840 ÷ 24. Then Nora needs 3 of that amount. What is the total they need?

   Answer. 105

   24 × 35 = 840, so 840 ÷ 24 = 35. Then multiply by 3: 105.

8. 8.

   Find 12 ÷ 4. Then Nora needs 5 of that amount. What is the total they need?

   Answer. 15

   12 ÷ 4 = 3. Then multiply by 5: 15.

9. 9.

   Divide 494 ÷ 26. Then Jonah needs 3 of that amount. What is the total they need?

   Answer. 57

   26 × 19 = 494, so 494 ÷ 26 = 19. Then multiply by 3: 57.

10. 10.

    Find 10.5 ÷ 3. Then Luis needs 5 of that amount. What is the total they need?

    Answer. 17.5

    10.5 ÷ 3 = 3.5. Then multiply by 5: 17.5.

11. 11.

    Think

    Sam tried this problem:
    Divide 403 ÷ 13.
    Sam wrote 62. That is not correct. What is the right answer?

    Answer. 31

    Sam’s answer 62 is off. 13 × 31 = 403, so 403 ÷ 13 = 31.

12. 12.

    Think

    Mei tried this problem:
    Find 27.3 ÷ 7.
    Mei wrote -3.9. That is not correct. What is the right answer?

    Answer. 3.9

    Mei’s answer -3.9 is off. 27.3 ÷ 7 = 3.9.

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