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Cups to Fluid Ounces worksheet

Grades 4–5 · CCSS 4.MD.A.1, 5.MD.A.1

Solve each problem and show your work. Round answers to 2 decimal places where needed.

1.
Problem 1.
- Value to convert: 2
- Direction: US fluid ounces → US cups
Find: In US cups
Answer
2.
Problem 2.
- Value to convert: 2
- Direction: US cups → US fluid ounces
Find: In US fluid ounces
Answer
3.
Problem 3.
- Value to convert: 1
- Direction: US cups → US fluid ounces
Find: In US fluid ounces
Answer
4.
Problem 4.
- Value to convert: 3
- Direction: US cups → US fluid ounces
Find: In US fluid ounces
Answer
5.
Problem 5.
- Value to convert: 3
- Direction: US fluid ounces → US cups
Find: In US cups
Answer
6.
Problem 6.
- Value to convert: 4
- Direction: US cups → US fluid ounces
Find: In US fluid ounces
Answer
7.
Problem 7.
- Value to convert: 1
- Direction: US fluid ounces → US cups
Find: In US cups
Answer
8.
Problem 8.
- Value to convert: 4
- Direction: US fluid ounces → US cups
Find: In US cups
Answer
9.
Problem 9.
- Value to convert: 5
- Direction: US fluid ounces → US cups
Find: In US cups
Answer
10.
Problem 10.
- Value to convert: 5
- Direction: US cups → US fluid ounces
Find: In US fluid ounces
Answer

Answer key: Cups to Fluid Ounces worksheet

1. In US cups: 0.25 cup
1. The official definition goes the other way: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. So divide your US fluid ounces by 8 to get US cups
  $\frac{2 US fl oz}{8}$ $= 0.25 cup$
3. Or multiply by 0.125 instead. It gives the same answer, because 1 ÷ 8 = 0.125
  $2 US fl oz \times 0.125$ $= 0.25 cup$
2. In US fluid ounces: 16 US fl oz
1. Start with the conversion factor: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. Multiply your US cups by 8 to get US fluid ounces
  $2 cup \times 8$ $= 16 US fl oz$
3. In US fluid ounces: 8 US fl oz
1. Start with the conversion factor: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. Multiply your US cups by 8 to get US fluid ounces
  $1 cup \times 8$ $= 8 US fl oz$
4. In US fluid ounces: 24 US fl oz
1. Start with the conversion factor: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. Multiply your US cups by 8 to get US fluid ounces
  $3 cup \times 8$ $= 24 US fl oz$
5. In US cups: 0.37 cup
1. The official definition goes the other way: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. So divide your US fluid ounces by 8 to get US cups
  $\frac{3 US fl oz}{8}$ $= 0.375 cup$
3. Or multiply by 0.125 instead. It gives the same answer, because 1 ÷ 8 = 0.125
  $3 US fl oz \times 0.125$ $= 0.375 cup$
6. In US fluid ounces: 32 US fl oz
1. Start with the conversion factor: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. Multiply your US cups by 8 to get US fluid ounces
  $4 cup \times 8$ $= 32 US fl oz$
7. In US cups: 0.13 cup
1. The official definition goes the other way: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. So divide your US fluid ounces by 8 to get US cups
  $\frac{1 US fl oz}{8}$ $= 0.125 cup$
3. Or multiply by 0.125 instead. It gives the same answer, because 1 ÷ 8 = 0.125
  $1 US fl oz \times 0.125$ $= 0.125 cup$
8. In US cups: 0.5 cup
1. The official definition goes the other way: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. So divide your US fluid ounces by 8 to get US cups
  $\frac{4 US fl oz}{8}$ $= 0.5 cup$
3. Or multiply by 0.125 instead. It gives the same answer, because 1 ÷ 8 = 0.125
  $4 US fl oz \times 0.125$ $= 0.5 cup$
9. In US cups: 0.63 cup
1. The official definition goes the other way: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. So divide your US fluid ounces by 8 to get US cups
  $\frac{5 US fl oz}{8}$ $= 0.625 cup$
3. Or multiply by 0.125 instead. It gives the same answer, because 1 ÷ 8 = 0.125
  $5 US fl oz \times 0.125$ $= 0.625 cup$
10. In US fluid ounces: 40 US fl oz
1. Start with the conversion factor: 1 cup is exactly 8 US fl oz
  $1 cup$ $= 8 US fl oz$
2. Multiply your US cups by 8 to get US fluid ounces
  $5 cup \times 8$ $= 40 US fl oz$