Capacity Maths Grade 2 Learning Concepts | Orchids International Schools
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Measurements

Capacity

Capacity: The capacity of a vessel/container is the quantity of liquid or matter it can hold.

Example 1:

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  • This jug contains some amount of water.
  • G2_2_C_GLASS.png
  • The glass is fully filled with water.
  • We can easily guess that the jug contains more water than the glass.
  • That is because the jug is larger than the glass.

Example 2:

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  • Jug is the biggest vessel so it contains more amount of water than other vessels.
  • Cup is the smallest vessel so it contains least amount of water than other vessel.
  • Glass will contain amount of water more than cup and less than jug.

Example 3:

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  • Height of the vessels is same but first vessel is narrow and second one is broad.
  • So, capacity of the first vessel is lesser than the second vessel.
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Non-standard units of the capacity

  1. During ancient times, people used to measure capacity of a vessel by another vessel.

    Example : There was traditional wooden measuring pot by which people measure the weight of the grains.

    G2_6_C_POT.png

    But everyone has different shape and size of pot. So, this pot was a non-standard unit of capacity.

  2. Suppose a bucket full filled with 9 mugs of water.

    G2_7_C_BUCKET1.png

    A bucket contains 9 mugs of water.

    But if we take bigger mug, bucket will full fill with 6 mugs.

    G2_8_C_BUCKET2.png

    A bucket contains 6 mugs of water.

    So, here mug is the non-standard unit of the capacity of bucket.

  3. When we make a tea we use approximate measure of the sugar. For example, some use 2 spoons of sugar, some use 1 spoon of sugar, etc.

    G2_9_C_SPOON.png

    Shape and size of the spoon can vary. So, spoon is also non-standard unit of capacity.

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