MIA · Mixed set · Unit 2

1. 1.

   Find 5.51 + 0.92.

   Answer. 6.43

   Add hundredths: 551 + 92 = 643 hundredths → 6.43.

2. 2.

   Find 16 ÷ 0.8.

   Answer. 20

   Rewrite as 160 ÷ 8 = 20.

3. 3.

   How many groups of 12 are in 5?

   Answer. 10

   5 ÷ 12 = 5 × 2 = 10 groups.

4. 4.

   Compute 14 ÷ 13. Write the quotient in simplest form.

   Answer. 34

   14 ÷ 13 = 14 × 31 = 34.

5. 5.

   A rectangular prism has length 4 in, width 14 in, and height 2 in. Find the volume. Then Owen needs 3 of that amount. What is the total they need?

   Answer. 6 cubic in

   V = ℓwh = 4 × 14 × 2 = 2 cubic in. Then multiply by 3: 6 cubic in.

6. 6.

   Find 4.4 × 3.1. Then Ava needs 2 of that amount. What is the total they need?

   Answer. 27.28

   4.4 × 3.1 = 13.64. Then multiply by 2: 27.28.

7. 7.

   Find 12 ÷ 0.5. Then Malik needs 4 of that amount. What is the total they need?

   Answer. 96

   Rewrite as 120 ÷ 5 = 24. Then multiply by 4: 96.

8. 8.

   How many groups of 13 are in 4? Then Priya needs 4 of that amount. What is the total they need?

   Answer. 48

   4 ÷ 13 = 4 × 3 = 12 groups. Then multiply by 4: 48.

9. 9.

   Jonah has 12 of a pizza and serves pieces that are 14 of a pizza. How many pieces is that?

   Answer. 2

   12 ÷ 14 = 12 × 41 = 2.

10. 10.

    A rectangular prism has length 3 in, width 13 in, and height 2 in. Find the volume. Then Mei needs 2 of that amount. What is the total they need?

    Answer. 4 cubic in

    V = ℓwh = 3 × 13 × 2 = 2 cubic in. Then multiply by 2: 4 cubic in.

11. 11.

    Think

    Priya tried this problem:
    Find 9 − 1.88.
    Priya wrote 14.24. That is not correct. What is the right answer?

    Answer. 7.12

    Priya’s answer 14.24 is off. 900 − 188 = 712 hundredths → 7.12.

12. 12.

    Think

    Theo tried this problem:
    Find 6 ÷ 0.4.
    Theo wrote 14. That is not correct. What is the right answer?

    Answer. 15

    Theo’s answer 14 is off. Rewrite as 60 ÷ 4 = 15.

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