Able to apply the four operation in solving problems involving length.

__UNIT 4__

__Measurements__

** **

__Length__

** **

__a. Able to apply the four operation in
solving problems involving length.__

**Introduction**

In day to day life, we are measuring
many small things by standard and non standard units. But how can we measure
the distance**.**

The metric units are used to measure the length and distance.

I am measurika. I would like to measure:

1. What is the length of the table?

2. How tall am I?

3. How far is my school from my home?

How do I measure it? What kind of
measurements are they?

Ponni explained her that how long things
are, how tall they are,** **or how far
apart they might be. These are all the examples of length.

Measaurika, you should know the
following measurements:

** **

**a.
Millimeter (mm): Millimeters is the smaller unit of length. A millimeter is
about the thickness of a plastic id card (or Debit/ credit card). Or about the
thickness of 10 sheets of paper on top of each other.**

**This is a very small measurement****!**

**b. Centimeter: 10 millimeters is equal to 1 centimeter **

1
centimeter = 10 millimeters

A fingernail is about one centimeter
wide.

We can use millimeters or centimeters
to measure how tall we are, or how wide a table is. But to measure the length
of football field, it is better to use meters.

Measurika,
could you please mark 5mm in the scale? Children could you please help
measurika.

Could you please mark 4mm in red
colour and 10mm in Green colour?

Could you mark 1cm and 3mm (1.3cm) ?

10 milli meter = 1 centi
meter

10 centi meter = 1 deci
meter

10 deci meter = 1 meter

10 meter = 1 deca meter

10 deca meter = 1 hecta
meter

10 hecta meter = 1 killo
meter

**c.
Meter**

A meter is equal to 100 centimeters

The length of this guitar is about 1
meter

Meters are used to measure the length
of a house, or the size of a play ground.

One meter is approximately the length
from your shoulder to your fingertips. A meter is also approximately the
distance of one large step or jump.

A
Measuring tape has centimeter and meter units marked on it. Measuring tapes are
useful for measuring lengths of cloth, or large household objects like
furniture and rooms.

**d.
Kilometer**

When you need to get from one place to
another, you can measure the distance using kilometers. A kilometer is equal to
1,000 meters.

The distance from one city to another or
how far a plane travels is measured using kilometers.

We can ride a Two wheeler/ Four wheeler
to go from one place to the other. The distance travelled is measured using the
speedometer.

1Km = 1000m

Tags : Measurements | Term 1 Chapter 4 | 5th Maths , 5th Maths : Term 1 Unit 4 : Measurements

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5th Maths : Term 1 Unit 4 : Measurements : Length | Measurements | Term 1 Chapter 4 | 5th Maths

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