- Identify customary units of measurement for Capacity
- Use multiplication and division to determine customary measurement equivalencies
- Use measuring tools and purpose of measuring
What is Capacity?
Capacity is the total amount of fluid that can be contained in a container, It is the word we use when we measure liquid.
We use multiplication and division to determine customary measurement equivalencies.
- Fluid Ounce
Note- Capacity term is use to measure the amount of liquid in the container.
Some basic Customary Unit of capacity and relation between
Quantity of Customary units of Capacity (Approximate)
- 1 Fluid ounce: – Is equal to the volume of a small medicine cap.
- 1 Cup: – A small glass holds about 8 fluid ounces.
- 1 Pint: – A large glass of milk.
- 1 Quart: – When we want to use many cups of liquid and put them together, we might want to use a quart.
- Gallon: – If we still need more liquid, we can switch to gallon.
Conversion between the units of Capacity
To convert larger unit to a smaller unit, we multiply.
To convert smaller unit to a larger unit, we divide.
Observe the image carefully and try to solve the questions based on conversion between the units of capacity.
1. 14 pints to quart
Since, 1 quart = 2 pints
Therefore, 1 pint = ½ quart
Now, for 14 pints = ½ ×14
= 7 quarts(qt)
2. 8 gallons to pint
Since, 1 gal = 8 pints
Therefore, 8 pints = 8 ×
= 64 pints(pt)
3. 18 ½ quart to cups
Since, 1 quart = 4 cups
Therefore, 18 ½ qt = 18 × 4 + ½
= 72 + 2
= 74 cups
4. 64 quarts to gallons
Since, 1 gallon = 4 quarts
Therefore, 1 quart = ¼ gallon
Now, for 64 quarts = 64 × ¼
= 16 gallons (gal)
5. 13 cups to quarts
Since, 1 quart = 4 cups
Therefore, 1 cup = ¼ quart
Now, for 13 cups = 13 × ¼
= 12-quart 1cup (12qt 1c)
Real life applications based on units on Capacity (Word Problems)
1. A tall glass can hold 2 pints and a big mug can holds 34 oz. Which one holds more?
Solution: – Since 1 pt = 16 oz
So, 2 pints = 16 × 2 = 32 oz(ounces)
Therefore, A big mug can hold more.
2. How many ounces are there in 4 quarts?
Solution: Since 32 fl. Oz (fluid ounces) = 1 quart (qt)
So, 4 qt = 32 × 4 = 128 fl. oz
3. John made some mashed onion. For every two onions he boiled, he added 2 ounces of milk. If he boiled 16 onions, how much milk did he add to the mashed onion?
Solution: 16 ÷ 2
= 8 fl oz
What have we learned
- Student have learned about the identification of units of capacity.
- Convert smaller units to large unit
- Convert larger unit to smaller unit
- With different model of images students have learnt the real life applications of capacity.