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Natural Number - PowerPoint PPT Presentation


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Natural Number. The counting numbers 1, 2, 3, 4, … are called natural numbers. Whole Number . The natural numbers along with 0 are called whole numbers. Digits. In Hindu-Arabic system of writing numbers, the ten symbols namely 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 are called digits or figures.

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Presentation Transcript
natural number
Natural Number

The counting numbers 1, 2, 3, 4, … are called natural numbers.

whole number
Whole Number

The natural numbers along with 0 are called whole numbers

digits
Digits

In Hindu-Arabic system of writing numbers, the ten symbols namely 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 are called digits or figures.

numeral
Numeral

A single digit or group of digits denoting a number is called a numeral. For example, 8; 3451 and 71563 are numerals.

numeration
Numeration

Writing a number in words is called numeration.

number pattern
Number Pattern

Numbers can have some interesting patterns. Complete the table given alongside to find out for yourself.

9 + 1 = 10

99 + 1 = 100

999 + 1 = .............

9,999 + 1 = .............

99,999 + 1 = .............

face value
Face Value

The face value of a digit is the number or a symbol it represents irrespective of its position in the numeral.

For example, the face value of ‘5’ in 3,76,451 as well as in 57,869 is 5.

place value
Place Value

The place value of a digit in a number is its face value multiplied by its position value in the place value chart. The place value of a digit depends on its position in the number.

For example, the place value of ‘5’ in 6,285 is 5 × 1 = 5 and 5,41,008 is 5 × 1,00,000 = 5,00,000

indian system of numeration
Indian system of numeration

In the Indian system of numeration commas are placed after 3 digits starting from the right. The other periods to the left of the ones period have two places each.

1,00,000.00

international system of numeration
International system of numeration

In the International system of numeration commas are placed after every 3 digits from the right.

roman numeral system
Roman Numeral System

The Roman numeral system uses seven basic symbols to represent numbers.

I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000

We also follow certain rules specific to the Roman numeral system.

standard unit of measurement
Standard Unit of measurement

The standard unit of length is metre. There exist smaller as well as bigger units of length. Their relation are as follows:

1 centimetre (cm) = 10 millimetres (mm)

1 decimetre (dm) = 10 centimetres (cm)

1 metre (m) = 10 decimetres (dm)

1 decametre (dam) = 10 metres (m)

1 hectometre (hm) = 10 decametres (dam)

1 kilometre (km) = 10 hectometres (hm)

slide15
Mass

The standard unit of mass is kilogram (kg). There exist smaller as well as bigger units of mass. Their relation are as follows:

1 centigram (cg) = 10 milligrams (mg)

1 decigram (dg) = 10 centigrams (cg)

1 gram (g) = 10 decigrams (dg)

1 decagram (dag) = 10 grams (g)

1 hectogram (hg) = 10 decagrams (dag)

1 kilogram (kg) = 10 hectograms (hg)

capacity
Capacity

The standard unit of capacity is litre (L).There exist smaller as well as bigger units of capacity. Their relation is as follows:

1 centilitre (cL) = 10 millilitres (mL)

1 decilitre (dL) = 10 centilitres (cL)

1 litre (L) = 10 decilitres (dL)

1 decalitre (daL) = 10 litres (L)

1 hectolitre (hL) = 10 decalitres (daL)

1 kilolitre (kL) = 10 hectolitres (hL)