Topics
7. Measurement
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United States of AmericaAZ
4th Grade

7.02 Convert units of liquid volume

Lesson
Practice
Lesson

Are you ready?

Do you remember how to multiply by $1000$1000? Let's try a problem to practice.

Complete these number sentences.

  1. $8\times10=\editable{}$8×10=

  2. $80\times10=\editable{}$80×10=

  3. $800\times10=\editable{}$800×10=

  4. $8000\times10=\editable{}$8000×10=

Learn

Here are some relationships between the units for liquid volume:

  • $1$1 liter $=$= $1000$1000 milliliters
  • $1$1 quart $=$= $2$2 pints
  • $1$1 pint $=$= $2$2 cups
  • $1$1 cup $=$= $8$8 ounces

This video shows a strategy for converting between units of volume.

Vocabulary:

You might have noticed that liters and milliliters are spelled as 'litres' and 'millilitres' in the video. This is because that is the standard spelling in the metric system.

Apply

Convert $91$91 liters to milliliters.

  1. $91$91 liters = $\editable{}$ milliliters

Remember!

There are $1000$1000 milliliters in $1$1 liter.

This means that a liter is a thousand milliliters, and a milliliter is a thousandth of a liter.

Outcomes

4.MD.A.1

Know relative sizes of measurement units within one system of units which could include km, m, cm; kg, g; lb, oz.; L, ml; hr, min, sec. Within a single system of measurement, express measurements in a larger unit in terms of a smaller unit and in a smaller unit in terms of a larger unit. For example, know that 1 ft is 12 times as long as 1 in. Express the length of a 4 ft snake as 48 in. Generate a conversion table for feet and inches listing the number pairs (1,12), 2,24), (3,36).

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