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Class II - maths: Metric measures
One Word Answer Questions:
Q) How you write 400 cm in meters?
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Q) How you write 8m in centimeters?
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Q) Add the 5 kg and 3 kg?
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Q) How you write 1 kilogram in grams?
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Q) How many centimetres is equal to metres?
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Q) The standard Si unit for measuring volume is the?
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Q) The weight of heavy objects is measured using?
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Q) What are the units of mass?
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Q) Which of these would you most likely use to measure the volume of a glass of orange juice?
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Q) 1000 mm equals to how many feet = ?
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Short Answer Questions:
Q) Add the 657 kg + 423 kg +564 kg = ?
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Q) Subtract the 89 g - 54 g - 67 g = ?
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Q) Give the four examples , which we measure in L ?
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Q) Give the four examples , which we measure in ml?
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Q) Give the four examples , which we measure in cm?
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Q) What would be the scientific measurements of the above diagram?
    
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Q) The standard Si unit for measuring volume is the ?
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Q) Convert 10 kg into grams?
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Q) 1 / 2 kgs how many grams?
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Q) How many grams in 4 kilograms?
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Long Answer Questions:
Q) Give the four examples , which we measure in grams?
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Q) Give the four examples , which we measure in kg s?
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Q) Give the four examples , which we measure in L and ml?
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Q) Write the decending order for 23 ml , 65 ml , 54 ml , 76 ml , 34 ml?
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Q) Write the ascending order 65 ml , 46 ml , 78 ml , 98 m l , 54 ml?
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Q) Add the 657 kg + 423 kg + 564 kg = ?
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Q) 750 grams + 5 Kilograms + 250 grams is How many Kilograms?
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Q) 700 mm equals to how many cm?
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Q) Write about Measurement Of Weight Or Mass? Give an examples?
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Measurements

Definition:
"Measurement is the procedure or method of identifying the relationship between two numbers".
Example: Jaya and his mother wanted to measure their height. They use a door to mark their height.
This is a non-standard unit of measuring length.

Measurements
Examples of non-standard units of measurement.

Measurements
Measurements

Measurement Of Length

"Measurement of length is nothing but measuring the distance".
Example: If the length of a notebook is measured using a pencil and a crayon, the notebook is 4 pencils long and when it is measured with the crayon, it is 6 crayons long.
The reason behind this is the length of the pencil and the length of the crayon is not the same.
The crayon is shorter than the pencil.

Measurements
To measure length correctly, we use fixed measures which are centimetres(cm) for small lengths and metres(m) for bigger lengths.

"Centimetres and metres are standard units of length".

Centimetre

Measurements

The scale above is 12 cm long. Centimeter is written as "cm".

Example:
  • The notebook is about 15 cms.
  • Measurements
  • The comb is about 10 cms.
  • Measurements

Metre

Metre is bigger measure of length.
1 metre = 100 centimetres.
We write metre as "m".
1 m = 100 cm
Examples:

  • The book shelf is about 3 m high.
  • Measurements
  • The dolphin is about 33 m long
  • Measurements

Example 1: Write 700 cm in metres.
Solution: We know that,
100 cm = 1 m
700 cm = 7 m.
Example 2: Write 3 metres in centimetres.
Solution: We know that,
1m = 100 cm
3 m = 300 cm.

Measuring With A Scale

Scale is used to measure small lengths.
Lengths are always measured starting from the 0 mark on the scale.
Example:

Measurements
The pen is 14 cm long.

Measurements

Measurement Of Weight Or Mass

When non-standard units of measurement are used for measuring objects or finding weight, the accuracy of the measurement is difficult.
In order to get accurate measurements each time, we use standard units of measurement.
The weight of an object is measured using the standard measures 'grams' and 'kilograms'.

Grams

"The weight of light objects is measured by using grams (g)."
Example:

  • The strawberry is 7 grams.
  • Measurements
  • The bag is 125 grams.
  • Measurements

Kilograms

"The weight of heavy objects is measured using kilogram".
1 kilogram = 1000 grams

Example:

  • The football is less than 1 kg
  • Measurements

  • The musk melon is 2 kg or 2000 g.
  • Measurements

    Fruits and vegetables are measured using weights of metal. The measuring weight varies from 5 kg, 2 kg, 1 kg or so, to weigh the fruits and vegetables in a balance.
    When the pans balance, the weight of the object kept on the pan is the same.

    Measurements

    Sometimes, a single pan weighing machine is used to weigh objects.
    An arrow moves on a scale and we can read the weight of the object kept on the pan.

    Measurements

    Sometimes a weighing machine gives the weight directly on a monitor kept above the platform.
    Generally heavy objects are measured on it.

    Measurements
Measurements

Measurement Of Capacity

We measure the capacity of liquids.
Liquid is usually measured using cups and glasses, but if the measurement of cups and glasses differ, the answer is not accurate.

In order to avoid such situation, and to measure the capacity correctly, we use fixed standard measures like millilitres and litres.

Millilitres

"Millilitres are used to measure small capacities. It is written as ml".

Examples:

  • A teaspoon of salt is 5 mL.
  • Measurements
  • 20 drops of water is about 4 mL.
  • Measurements

Litres

"Larger quantities are measured using litres".
1 litre = 1000 millilitres

Examples:

  • 1 jug of water is 3 litres.
  • Measurements
  • Each juice bottle is 2 litres.
  • Measurements

Learning To Work With Metric Units Of Measure

Adding And Subtracting Measures Of Length
( 1m = 100 cm)

  • We add cm with cm and m with m.
  • We subtract cm from cm and m from m.
  • Examples:

    Measurements

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