L8 · Divide whole numbers and multi-digit decimals

1. 1.

   Find 20 ÷ 0.8.

   Answer. 25

   Rewrite as 200 ÷ 8 = 25.

2. 2.

   Find 12.4 ÷ 0.4.

   Answer. 31

   Rewrite as 124 ÷ 4 = 31.

3. 3.

   Find 4.4 ÷ 0.2.

   Answer. 22

   Rewrite as 44 ÷ 2 = 22.

4. 4.

   Find 9.5 ÷ 0.5.

   Answer. 19

   Rewrite as 95 ÷ 5 = 19.

5. 5.

   Find 13.5 ÷ 0.5. Then Theo needs 5 of that amount. What is the total they need?

   Answer. 135

   Rewrite as 135 ÷ 5 = 27. Then multiply by 5: 135.

6. 6.

   Find 13 ÷ 0.5. Then Elena needs 4 of that amount. What is the total they need?

   Answer. 104

   Rewrite as 130 ÷ 5 = 26. Then multiply by 4: 104.

7. 7.

   Find 16.8 ÷ 0.8. Then Luis needs 4 of that amount. What is the total they need?

   Answer. 84

   Rewrite as 168 ÷ 8 = 21. Then multiply by 4: 84.

8. 8.

   Find 14.4 ÷ 0.4. Then Ava needs 2 of that amount. What is the total they need?

   Answer. 72

   Rewrite as 144 ÷ 4 = 36. Then multiply by 2: 72.

9. 9.

   Find 4.6 ÷ 0.2. Then Sam needs 4 of that amount. What is the total they need?

   Answer. 92

   Rewrite as 46 ÷ 2 = 23. Then multiply by 4: 92.

10. 10.

    Find 18 ÷ 0.5. Then Mei needs 5 of that amount. What is the total they need?

    Answer. 180

    Rewrite as 180 ÷ 5 = 36. Then multiply by 5: 180.

11. 11.

    Think

    Owen tried this problem:
    Find 12.8 ÷ 0.8.
    Owen wrote 32. That is not correct. What is the right answer?

    Answer. 16

    Owen’s answer 32 is off. Rewrite as 128 ÷ 8 = 16.

12. 12.

    Think

    Priya tried this problem:
    Find 12.8 ÷ 0.8.
    Priya wrote 32. That is not correct. What is the right answer?

    Answer. 16

    Priya’s answer 32 is off. Rewrite as 128 ÷ 8 = 16.

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