Articles by "Arithmetic"
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It is an exclusive e-Learning Blog that has been dedicated to help keen learn students to boost their knowledge in different subjects.

Cardinal Numbers

Cardinal Numbers
0
 Zero
1
 One
2
 Two
3
 Three
4
 Four
5
 Five
6
 Six
7
 Seven
8
 Eight
9
 Nine
10
 Ten
11
 Eleven
12
 Twelve
13
 Thirteen
14
 Fourteen
15
 Fifteen
16
 Sixteen
17
 Seventeen
18
 Eighteen
19
 Nineteen
20
 Twenty
21
 Twenty One
22
 Twenty Two
... .. .
... .. .
30
 Thirty
40
 Fourty
50
 Fifty
60
 Sixty
70
 Seventy
80
 Eighty
90
 Ninety
100
 One Hundred
1000
 One Thousand
10,000
 Ten Thousand
100,000
 One Hundred Thousand
1,000,000
 One Million
1,000,000,000
 One Billion



Ordinal Numbers:

Ordinal Numbers
First
1st
Second
2nd
Third
3rd
Forth
4th
Fifth
5th
Sixth
6th
Seventh
7th
Eighth
8th
Ninth
9th
Tenth
10th
Eleventh
11th
Twelfth
12th
... .. .
... .. .


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It is an exclusive e-Learning Blog that has been dedicated to help keen learn students to boost their knowledge in different subjects.

The units of measuring length:


N.B: Unit of measurement of length: Metre

Relation between British and Metric System:


Metric Units of Measurement of Weights:


N.B: There are two more units used for measurement in metric system. The units quintal and metric ton are used to measure large quantity of goods.
100 kilograms = 1 quintal
1000 kilograms = 1 metric ton

Metric Units for measurement of Volume of Liquids:


N.B: The unit of measuring volume of liquid : litre and Weight of 1 litre of pure water is 1 kilogram

Metric Units in Measuring Area:


N.B: Unit of measure of area : square metre

Relation between Metric and British System in Measuring Area:


Relation between Metric, British and National Units in Measuring Area:


Metric Units of Measuring Volume:


Relation between Metric and British Systems of Volume:

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It is an exclusive e-Learning Blog that has been dedicated to help keen learn students to boost their knowledge in different subjects.
Example 6. Profit-principal of some principal becomes Tk. 5500 in 3 years and profit is 8/3 of the principal. What are the principal and rate of profit?

Solution:
We know, principal + profit = profit-principal


                                                ∴ Profit = profit-principal principal
                                              = Tk. (5500 4000)
                                              = Tk. 1500

                             Again, we know, I = Prn
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It is an exclusive e-Learning Blog that has been dedicated to help keen learn students to boost their knowledge in different subjects.
Class: Eight (VIII)
Exercise: 1 (Patterns)

1. a) Find the next four consecutive numbers of the following list: 1, 3, 5, 7, 9, ... .. .

Solution:

Numbers in the list: 1, 3, 5, 7, 9, ... .. .
Difference:                2  2  2  2

Note that every time the difference is 2. Hence the next four numbers are 9 + 2 = 11, 11 + 2 = 13, 13 + 2 = 15 and 15 + 2 = 17.


1. b) Find the next four consecutive numbers of the following list: 4, 8, 12, 16, 16, 20 ... .. .

Solution:


Numbers in the list: 4, 8, 12, 16, 20, ... .. .
Difference:                 4  4  4  4  4

Note that every time the difference is 4. Hence the next four numbers are 20 + 2 = 24, 24 + 4 = 28, 28 + 4 =32 and 32 + 4 = 36.

1. c) Find the next four consecutive numbers of the following list: 5, 10, 15, 20, 25, ... .. .

Solution:


Numbers in the list: 5, 10, 15, 20, 25, ... .. .
Difference:                 5    5    5    5

Note that every time the difference is 5. Hence the next four numbers are 25 + 5 = 30, 30 + 5 = 35, 35 + 5 =40 and 40 + 5= 45.

1. d) Find the next four consecutive numbers of the following list: 7, 14, 21, 28, 35, ... .. .

Solution:


Numbers in the list: 7, 14, 21, 28, 35, ... .. .
Difference:                 7    7    7    7

Note that every time the difference is 7. Hence the next four numbers are 35 + 7 = 42, 42 + 7 = 49, 49 + 7 =56 and 56 + 7= 63.

1. e) Find the next four consecutive numbers of the following list: 8, 16, 24, 32, 40, ... .. .

Solution:


Numbers in the list: 8, 16, 24, 32, 40, ... .. .
Difference:                 8    8    8    8

Note that every time the difference is 8. Hence the next four numbers are 40 + 8 = 48, 48 + 8 = 56, 56 + 8 =64 and 64 + 8= 72.

1. f) Find the next four consecutive numbers of the following list: 6, 12, 18, 24, 30, ... .. .

Solution:


Numbers in the list: 6, 12, 18, 24, 30, ... .. .
Difference:                 6    6    6    6

Note that every time the difference is 6. Hence the next four numbers are 30 + 6 = 36, 36 + 6 = 42, 42 + 6 =48 and 48 + 6= 54.
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