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Convert Units of Capacity and Volume (Liquid)

Students convert between units of liquid capacity (e.g., cups, pints, quarts, gallons; milliliters and liters) within the same system. They practice applying conversion factors accurately.

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Convert Units of Capacity and Volume (Liquid)

Grade 5 · Measurement Conversions · question 1 of 3

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50010001500mL

What is the jug's reading in liters?

Read the jug.

How it is taught

0:00 of 3:30

Capacity can be renamed with a smaller or larger liquid unit.

Liters and milliliters stay in the same metric family.

Read it: Find the factor, then convert

1 gallon is 4 quarts, so 2 gallons are 8 quarts and 3 gallons are 12 quarts. The quarts row is the gallons row times 4: 6 gallons are 6 × 4 = 24 quarts.

  1. Find the factor: how many quarts make 1 gallon. Here it is 4.
  2. From a big unit to a small one there are more of them, so multiply by the factor.
  3. From a small unit to a big one there are fewer, so divide: 24 quarts ÷ 4 = 6 gallons.

A gallon holds more than a quart, so it takes 4 quarts to hold as much as 1 gallon.

Each gallon more adds 4 quarts more, so every column of the table is times 4.

Two steps work the same way: 1 gallon is 4 quarts and 1 quart is 4 cups, so 1 gallon is 4 × 4 = 16 cups.

To change to the smaller unit, multiply by the factor; to change to the bigger unit, divide by it.

Adding the factor instead of multiplying, and saying 2 gallons are 2 + 4 = 6 quarts.

Every gallon is 4 quarts, so 2 gallons are 2 × 4 = 8 quarts.

17 quarts = ___ pints — 34. Every quart is 2 pints, so 17 of them is 17 times 2: 34.

3 gallons = ? quarts

Let's convert capacity units. We have three gallons of juice — how many quarts is that?

First, remember the key fact: one gallon equals four quarts.

Picture one gallon split into four equal quart jugs.

We have three gallons, so we multiply: three times four quarts.

What is three times four?

Three times four is twelve.

Quick check: bigger unit to smaller unit — we multiply, and we get a bigger number. That makes sense!

3 gallons = ? quartsKey fact1 gallon = 4 quarts1 gallon=4 quarts3gallons×4quarts/gal=12 quartsbigger unit → smaller unit: multiply3 gallons = 12 quarts1 gal = 4 qt · multiply by 4ANSWER12quarts
Grade 5 · Gallons to quarts using a conversion factor

So three gallons equals twelve quarts. Great work!

What you see

While they climb, your page writes one true line to ask about tonight, and a short note each Sunday.

MayaGrade 3 · Mathematics
Did you know?

A chessboard has 64 squares — share them out between the 8 rows and each row holds exactly 8.

Today’s goal
1 star — one skill mastered, every rung of its ladder climbed
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Divide within 100

An example student.

MayaGrade 3 · Mathematics

Maya earned 2 stars this week — Interpret multiplication as equal groups, which took 6 answers over 3 days before its star landed 3 days ago and Multiply by 6, 7, 8 and 9. Next up: Divide within 100.

An example week.

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Convert Units of Capacity and Volume (Liquid) — Grade 5 Mathematics