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Basic Mathematics

MULTIPLICATION TABLE FROM 11 TO 20

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MULTIPLICATION TABLES FROM 11 TO 20

🔹MULTIPLICATION TABLES OF 11 AND 12

11×1 = 11 | 12×1 = 12
11×2 = 22 | 12×2 = 24
11×3 = 33 | 12×3 = 36
11×4 = 44 | 12×4 = 48
11×5 = 55 | 12×5 = 60
11×6 = 66 | 12×6 = 72
11×7 = 77 | 12×7 = 84
11×8 = 88 | 12×8 = 96
11×9 = 99 | 12×9 = 108
11×10 = 110 | 12×10 = 120

🔹MULTIPLICATION TABLES OF 13 AND 14

13×1 = 13 | 14×1 = 14
13×2 = 26 | 14×2 = 28
13×3 = 39 | 14×3 = 42
13×4 = 52 | 14×4 = 56
13×5 = 65 | 14×5 = 70
13×6 = 78 | 14×6 = 84
13×7 = 91 | 14×7 = 98
13×8 = 104 | 14×8 = 112
13×9 = 117 | 14×9 = 126
13×10 = 130 | 14×10 = 140

🔹MULTIPLICATION TABLES OF 15 AND 16

15×1 = 15 | 16×1 = 16
15×2 = 30 | 16×2 = 32
15×3 = 45 | 16×3 = 48
15×4 = 60 | 16×4 = 64
15×5 = 75 | 16×5 = 80
15×6 = 90 | 16×6 = 96
15×7 = 105 | 16×7 = 112
15×8 = 120 | 16×8 = 128
15×9 = 135 | 16×9 = 144
15×10 = 150 | 16×10 = 160

🔹MULTIPLICATION TABLES OF 17 AND 18

17×1 = 17 | 18×1 = 18
17×2 = 34 | 18×2 = 36
17×3 = 51 | 18×3 = 54
17×4 = 68 | 18×4 = 72
17×5 = 85 | 18×5 = 90
17×6 = 102 | 18×6 = 108
17×7 = 119 | 18×7 = 126
17×8 = 136 | 18×8 = 144
17×9 = 153 | 18×9 = 162
17×10 = 170 | 18×10 = 180

🔹MULTIPLICATION TABLES OF 19 AND 20

19×1 = 19 | 20×1 = 20
19×2 = 38 | 20×2 = 40
19×3 = 57 | 20×3 = 60
19×4 = 76 | 20×4 = 80
19×5 = 95 | 20×5 = 100
19×6 = 114 | 20×6 = 120
19×7 = 133 | 20×7 = 140
19×8 = 152 | 20×8 = 160
19×9 = 171 | 20×9 = 180
19×10 = 190 | 20×10 = 200

MEASURES

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MEASURES OF WEIGHT (METRIC SYSTEM )

 

 

 

10 milligrams = 1 Centigram (cg)
10 Centigrams = 1 Decigram (dg)
10 Decigrams = 1 gram (g)
10 Grams = 1 Decagram (Dg)
10 Decagrams = 1 Hectogram (hg)
10 Hectograms = 1 kilogram (kg)
10 Kilograms = 1 Myriagram
100 Kilograms = 1 Quintal
10 Myriagrams = 1 Quintal
10 Quintals = 1 Tonne or Ton
1000 Kilograms = 1 Tonne or Ton

 

 

MEASURES OF CAPACITY (METRIC SYSTEM)

 

 

 

10 Millilitres = 1 centilitre
10 Centilitres = 1 Decilitre
10 Decilitres = 1 Litre (1000 ml)
10 Litres = 1 Decalitre
10 Decalitres = 1 Hectolitre
10 Hectolitres = 1 Kilolitre (1000 litres)

 

 

MEASURES OF LENGTH (METRIC SYSTEM)

 

 

 

 

10 Millimetres (mm) = 1 Centimetre (cm)
10 Centimetres = 1 Decimetre (dm)
10 Decimetres = 1 Metre (m)
10 Metres = 1 Decametre (Dm)
10 Decametres = 1 Hectometre (hm)
10 Hectometres = 1 Kilometre (km)

 

 

MEASURES OF AREA (METRIC SYSTEM)

 

 

 

 

100 Sq. Millimetres = 1 Sq. Centimetre
100 Sq. Centimetres = 1 Sq. Decimetre
100 Sq. Decimetres = 1 Sq. Metre
100 Sq. Metres = 1 Sq. Decametre
100 Sq. Decametres = 1 Sq. Hectometre or 1 Hectare
100 Hectares = 1 Sq. Kilometre
1 Acre = 0.40 Hectare

 

 

MEASURES OF VOLUME

 

 

 

 

1000 Cubic Millimetres = 1 Cubic Centimetre
1000 Cubic Centimetres = 1 Cubic Decimetre
1000 Cubic Decimetres = 1 Cubic Metre
1000 Cubic Metres = 1 Cubic Decametre
1000 Cubic Decmetres = 1 Cubic Hectometre
1000 Cubic Hectometres = 1 Cubic Kilometre
1000 Cubic Kilometres = 1 Cubic Myriametre

 

 

MEASURES OF PAPER

 

 

 

24 Sheets = 1 Quire
20 Quires = 1 Ream
10 Reams = 1 Bale
500 Sheets = 1 Commercial Ream

 

 

MEASURES OF NUMBER

 

 

 

 

1 Unit means 1 One
2 Units means 1 Pair
12 Units means 1 Dozen
20 Units means 1 Score or Kori
144 Units means 1 Gross or 12 Dozens
12 Gross means 1 Great Gross

 

 

HOW TO READ NUMBERS

 

 

 

 

INDIA NUMBERS BRITAIN & U.S.A
Unit 1 Unit
Ten 10 Ten
Hundred 100 Hundred
Thousand 1000 Thousand
Ten Thousand 10000 Ten Thousand
Lakh 100000 Hundred Thousand
Ten Lakh 1000000 Million
Crore 10000000 Ten Million
Ten Crore 100000000 Hundred Million
Arab 1000000000 Billion
Ten Arab 10000000000 Ten Billion
kharab 100000000000 Hundred Billion

 

 

BRITISH MEASURES ( MEASURES OF LENGTH )

 

 

 

 

12 inches = 1 foot (ft)
3 feet = 1 yard (yd)
51 yards = 1 pole (p)
22 yards = 1 chain
40 poles = 1 furlong
10 chains = 1 furlong (fur)
8 furlongs = 1 mile
3 miles = 1 league
1760 yards = 1 mile
5280 feet = 1 mile

 

 

 

MEASURES OF AREA

 

144 square inches = 1 square foot (sq. ft.)
9 square feet = 1 square yard (sq.ft.)
484 square yards = 1 square chain (sq.ch)
4840 square yards = 1 acre (ac.)
10 square chains = 1 acre
640 acres = 1 square mile (sq. ml.)

 

 

MEASURES OF VOLUME

 

 

 

 

1728 cubic inches = 1 cubic foot
27 cubic feet = 1 cubic yard
1 gallon = 277.274 cubic inches
1 cubic foot = 6.23 gallons

 

 

 

♦ Translation in Assamese click here

 

MEANING OF METRIC PREFIXES

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MEANING OF METRIC PREFIXES

+      Addition or plus                                                        Δ      Triangle

−      Subtraction or minus                                             Ο      Circle

×      Multiplication                                                            .       Decimal point

÷      Division or divided by                                             :         Ratio

=      Is equal to                                                                  %      Per cent

≠      Is not equal to                                                           @      At the rate of

>      Greater than                                                             ∪       Union    

<      Less than                                                                   ∩       Intersection

rt.L  Right angle                                                            ⊂       Subset of

∴      Therefore                                                                    ⊄        Not a subset of

∈      Belongs to                                                                  ∉        Does not belong to

⁄       Slash                                                                              ⁄ ⁄        Parallel to

 

 

 

 

♦ Translation in Assamese click here

CALENDAR

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DAYS OF THE WEEK

 

 

ENGLISH SHORTFORM NAME OF THE HINDI WEEKS
Sunday Sun Raviwar
Monday Mon Somwar
Tuesday Tue Mangalwar
Wednesday Wed Budhwar
Thursday Thu Guruwar
Friday Fri Shukarwar
Saturday Sat Shaniwar

 

 

MONTHS OF THE YEAR

 

 

 

NAME OF THE MONTHS NO. OF DAYS NAME OF THE HINDI MONTHS
January 31 days chaitra
February 28 days & 29 days in a leap year Vaishakha
March 31 days Jaishtha
April 30 days Ashadha
May 31 days Shravana
June 30 days Bhadrapada
July 31 days Ashvina
August 31 days Kartika
September 30 days Margshirsha

 

October 31 days Pausha
November 30 days Magha
December 31 days Phalguna

 

 

♦   There are Thirty days in April, June, September, and November. All the rest have Thirty one days.Except, February which has Twenty eight days but, in Leap year February has Twenty nine days.

 

HOW TO FIND A LEAP YEAR
1. Divide the number of the year(when it does not end in 00 e.g. 1988 ) by 4. If there is no remainder,the year is a leap year.

2. However, if the number of the year ends in 00 (e.g. 2000) divide the number by 400. If there is no remainder,the year is a leap year.

 

 

 

JUBILEE TABLE TIME MEASURE
1 Year = Anniversary

10 years = Decade

25 years = Silver Jubilee

50 years = Golden Jubilee

60 years = Diamond Jubilee

75 years = Platinum Jubilee

100 years = Centenary

200 years = Bicentenary

 60 Seconds = 1 minute

60 Minutes = 1 hour

24 hours = 1 day

7 Days = 1 week

4 weeks = 1 month

14 days = 1 fortnight

365 days = 1 year

52 weeks = 1 year

366 days = 1 leap year

10 years = 1 decade

100 years = 1 century

♦ Translation in Assamese click here

♦ Currency click here

 

 

CLASSIFICATION OF NUMBERS

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NATURAL NUMBERS

All the numbers which are used for counting and starts from one are called NATURAL NUMBERS such as : 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 …………..

WHOLE NUMBERS

All natural numbers along with zero (0) are called WHOLE NUMBERS, Such as : 0 1 2 3 4 5 6 7 8 …………….

ODD NUMBERS

ODD NUMBERS are those numbers which are not divisible by 2 , such as : 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37…………

EVEN NUMBERS

EVEN NUMBERS are those numbers which are divisible by 2, such as 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40……

PRIME NUMBERS

PRIME NUMBERS are those numbers which are divisible by one and by itself only, Such as 2 3 6 7 11 13 17 19 23 29 31 37 41 47 53 59 61 67 71 73 79 83 89 97…….

COMPOSITE NUMBERS

COMPOSITE NUMBERS are those numbers which are divisible by itself and by at least one Prime Number such as:
4 6 8 9 10 12 14 15 16 18 20 22 24 25 26 27 28 30 32 33 34 35 36 38 39 40 42 44 45 46 48 49 50 ……….

FRACTIONAL NUMBERS

 

Fractional Numbers: (Fractions)Any number which is a part of a whole number is called a fractional number or Fraction, such as,

1/2 , 1/4 , 1/5 , 1/6

e.g.. 1/2  (Half) is a part of 1 (Whole)

 

Fractional Name                               Fraction

Half….                                                      1/2

One-third                                              1/3

One-fourth                                           1/4

Two-third and so on                          2/3

 

 

DECIMAL NUMBER

 

Fractional numbers can also be indicated by placing a dot called the decimal point. e.g. the fraction

1/4    can be written as 0.25

1/2    can be written as 0.50

1¼   can be written as 1.25

 

 

MEANING OF METRIC PREFIXES

 

 

Thousand

1000

 Hundred

100

 Ten

10

 Basic Unit

1

 Tenth

1/10

 Hundredth

1/100

 Thousandth

1/1000
Kilo Hecto Deca Metric units Metre,Litre,Gram Deci Centi Milli

 

 

CURRENCY

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WORLD CURRENCY

 

 

COUNTRY CURRENCY
Algeria Dinar
Australia Dollar
Austria Schilling
Canada Dollar
Denmark Krone
France Franc
Germany Deutschemark
Great Britain Pound
Hong Kong Dollar

 

India Rupee
Italy Lira
Japan Yen
Kenya Shilling
Kuwait Dinar
Mexico Peso
Netherlands Guilder
New Zealand Dollar
Nigeria Naira
Pakistan Rupee
Saudi Arabia Riyal
Singapore Dollar
South Africa Rand
Spain Peseta
USA Dollar

 

 

♦ Translation into Assamese click here

ADDITION TABLES

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ADDITION TABLES FROM 1 TO 10

 

 

 

»   ADDITION TABLES OF 1 AND 2

 

 

 

1+1 = 2 | 2+1 = 3
1+2 = 3 | 2+2 = 4
1+3 = 4 | 2+3 = 5
1+4 = 5 | 2+4 = 6
1+5 = 6 | 2+5 = 7
1+6 = 7 | 2+6 = 8
1+7 = 8 | 2+7 = 9
1+8 = 9 | 2+8 = 10
1+9 = 10 | 2+9 = 11
1+10 = 11 | 2+10 = 12

 

 

 

»  ADDITION TABLES OF 3 AND 4

 

 

 

3+1 = 4 | 4+1 = 5
3+2 = 5 | 4+2 = 6
3+3 = 6 | 4+3 = 7
3+4 = 7 | 4+4 = 8
3+5 = 8 | 4+5 = 9
3+6 = 9 | 4+6 = 10
3+7 = 10 | 4+7 = 11
3+8 = 11 | 4+8 = 12
3+9 = 12 | 4+9 = 13
3+10 = 13 | 4+10 = 14

 

 

 

 

»   ADDITION TABLES OF 5 AND 6

 

 

 

 

5+1 = 6 | 6+1 = 7
5+2 = 7 | 6+2 = 8
5+3 = 8 | 6+3 = 9
5+4 = 9 | 6+4 = 10
5+5 = 10 | 6+5 = 11
5+6 = 11 | 6+6 = 12
5+7 = 12 | 6+7 = 13
5+8 = 13 | 6+8 = 14
5+9 = 14 | 6+9 = 15
5+10 = 15 | 6+10 = 16

 

 

 

» ADDITION TABLES OF 7 AND 8

 

 

 

7+1 = 8 | 8+1 = 9
7+2 = 9 | 8+2 = 10
7+3 = 10 | 8+3 = 11
7+4 = 11 | 8+4 = 12
7+5 = 12 | 8+5 = 13
7+6 = 13 | 8+6 = 14
7+7 = 14 | 8+7 = 15
7+8 = 15 | 8+8 = 16
7+9 = 16 | 8+9 = 17
7+10 = 17 | 8+10 = 18

» ADDITION TABLES OF 9 AND 10

9+1 = 10 | 10+1 = 11
9+2 = 11 | 10+2 = 12
9+3 = 12 | 10+3 = 13
9+4 = 13 | 10+4 = 14
9+5 = 14 | 10+5 = 15
9+6 = 15 | 10+6 = 16
9+7 = 16 | 10+7 = 17
9+8 = 17 | 10+8 = 18
9+9 = 18 | 10+9 = 19
9+10 = 19 | 10+10 = 20

 

 

 

 

♦ Translation into Assamese click here

♦ Full Forms from A-Z click here

♦English Grammar in Assamese click here

ROMAN NUMERALS

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ROMAN NUMERALS CHART

 

 

 

IN FIGURES ROMAN NUMERALS IN FIGURES ROMAN NUMERALS IN FIGURES ROMAN NUMERALS IN FIGURES ROMAN NUMERALS
1 I 10 X 19 XIX 28 XXVIII
2 II 11 XI 20 XX 29 XXIX
3 III 12 XII 21 XXI 30 XXX
4 IV 13 XIII 22 XXII 31 XXXI
5 V 14 XIV 23 XXIII 32 XXXII
6 VI 15 XV 24 XXIV 33 XXXIII
7 VII 16 XVI 25 XXV 34 XXXIV
8 VIII 17 XVII 26 XXVI 35 XXXV
9 IX 18 XVIII 27 XXVII 36 XXXVI

 

 

IN FIGURES ROMAN NUMERALS
37 XXXVII
38 XXXVIII
39 XXXIX
40 XL
41 XLI
42 XLII
43 XLIII
44 XLIV
45 XLV
46 XLVI 56 LVI 66 LXVI 76 LXXVI 86 LXXXVI
47 XLVII 57 LVII 67 LXVII 77 LXXVII 87 LXXXVII
48 XLVIII 58 LVIII 68 LXVIII 78 LXXVIII 88 LXXXVIII
49 XLIX 59 LIX 69 LXIX 79 LXXIX 89 LXXXIX
50 L 60 LX 70 LXX 80 LXXX 90 XC
51 LI 61 LXI 71 LXXI 81 LXXXI 91 XCI
52 LII 62 LXII 72 LXXII 82 LXXXII 92 XCII
53 LIII 63 LXIII 73 LXXIII 83 LXXXIII 93 XCIII
54 LIV 64 LXIV 74 LXXIV 84 LXXXIV 94 XCIV
55 LV 65 LXV 75 LXXV 85 LXXXV 95 XCV

 

96 XCVI
97 XCVII
98 XCVIII
99 XCIX
100 C
500 D
900 CM
1000 M
1900 MCM
2000 MM

 

 

 

♦ Translation click here

♦ Numbers in words click here

 

NUMBERS IN WORDS

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                         THE IDEA OF NUMBERS :

 

0 ZERO
1 ONE
2 TWO
3 THREE
4 FOUR
5 FIVE
6 SIX
7 SEVEN
8 EIGHT
9 NINE
10 TEN

 

 

 

                                  NUMBERS IN WORDS :

 

1 One 11 Eleven 21 Twenty-one 31 Thirty-one 41 Forty-one
2 Two 12 Twelve 22 Twenty-two 32 Thirty-two 42 Forty-two
3 Three 13 Thirteen 23 Twenty-three 33 Thirty-three 43 Forty-three
4 Four 14 Fourteen 24 Twenty-four 34 Thirty-four 44 Forty-four
5 Five 15 Fifteen 25 Twenty-five 35 Thirty-five 45 Forty-five
6 Six 16 Sixteen 26 Twenty-six 36 Thirty-six 46 Forty-six
7 Seven 17 Seventeen 27 Twenty-seven 37 Thirty-seven 47 Forty-seven
8 Eight 18 Eighteen 28 Twenty-eight 38 Thirty-eight 48 Forty-eight
9 Nine 19 Nineteen 29 Twenty-nine 39 Thirty-nine 49 Forty-nine
10 Ten 20 Twenty 30 Thirty 40 Forty 50 Fifty

 

 

51 Fifty-one 61 Sixty-one 71 Seventy-one 81 Eighty-one 91 Ninety-one
52 Fifty-two 62 Sixty-two 72 Seventy-two 82 Eighty-two 92 Ninety-two
53 Fifty-three 63 Sixty-three 73 Seventy-three 83 Eighty-three 93 Ninety-three
54 Fifty-four 64 Sixty-four 74 Seventy-four 84 Eighty-four 94 Ninety-four
55 Fifty-five 65 Sixty-five 75 Seventy-five 85 Eighty-five 95 Ninety-five
56 Fifty-six 66 Sixty-six 76 Seventy-six 86 Eighty-six 96 Ninety-six
57 Fifty-seven 67 Sixty-seven 77 Seventy-seven 87 Eighty-seven 97 Ninety-seven
58 Fifty-eight 68 Sixty-eight 78 Seventy-eight 88 Eighty-eight 98 Ninety-eight
59 Fifty-nine 69 Sixty-nine 79 Seventy-nine 89 Eighty-nine 99 Ninety-nine
60 Sixty 70 Seventy 80 Eighty 90 Ninety 100 Hundred

 

 

 

 

♦ SUBTRACTION TABLES FROM 1 TO 10   Click here

 

SUBTRACTION TABLE

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SUBTRACTION TABLES FROM 1 TO 10

SUBTRACTION TABLES OF 1 AND 2

1-1 = 0 | 2-2 = 0
2-1 = 1 | 3-2 = 1
3-1 = 2 | 4-2 = 2
4-1 = 3 | 5-2 = 3
5-1 = 4 | 6-2 = 4
6-1 = 5 | 7-2 = 5
7-1 = 6 | 8-2 = 6
8-1 = 7 | 9-2 = 7
9-1 = 8 | 10-2 = 8
10-1 = 9 | 11-2 = 9

SUBTRACTION TABLES OF 3 AND 4

3-3 = 0 | 4-4 = 0
4-3 = 1 | 5-4 = 1
5-3 = 2 | 6-4 = 2
6-3 = 3 | 7-4 = 3
7-3 = 4 | 8-4 = 4
8-3 = 5 | 9-4 = 5
9-3 = 6 | 10-4 = 6
10-3 = 7 | 11-4 = 7
11-3 = 8 | 12-4 = 8
12-3 = 9 | 13-4 = 9

SUBTRACTION TABLES OF 5 AND 6

5-5 = 0 | 6-6 = 0
6-5 = 1 | 7-6 = 1
7-5 = 2 | 8-6 = 2
8-5 = 3 | 9-6 = 3
9-5 = 4 | 10-6 = 4
10-5 = 5 | 11-6 = 5
11-5 = 6 | 12-6 = 6
12-5 = 7 | 13-6 = 7
13-5 = 8 | 14-6 = 8
14-5 = 9 | 15-6 = 9

SUBTRACTION TABLES OF 7 AND 8

7-7 = 0 | 8-8 = 0
8-7 = 1 | 9-8 = 1
9-7 = 2 | 10-8 = 2
10-7 = 3 | 11-8 = 3
11-7 = 4 | 12-8 = 4
12-7 = 5 | 13-8 = 5
13-7 = 6 | 14-8 = 6
14-7 = 7 | 15-8 = 7
15-7 = 8 | 16-8 = 8
18-7 = 9 | 17-8 = 9

SUBTRACTION TABLES OF 9 AND 10

9-9 = 0 | 10-10 = 0
10-9 = 1 | 11-10 = 1
11-9 = 2 | 12-10 = 2
12-9 = 3 | 13-10 = 3
13-9 = 4 | 14-10 = 4
14-9 = 5 | 15-10 = 5
15-9 = 6 | 16-10 = 6
16-9 = 7 | 17-10 = 7
17-9 = 8 | 18-10 = 8
18-9 = 9 | 19-10 = 9