You must complete Whole Numbers to unlock this Lesson.

COUNTING IN BASE 2

CONTENT

Number Bases
Counting in Group of Twos
Conversion from Base 10 Numerals to Binary Numbers
Conversion from Binary to Decimal

Number Bases

In Mathematics, a base or radix is the number of different digits or combination of digits and letters that a system of counting uses to represent numbers. For example, the most common base used today is the decimal system. Because "dec" means 10, it uses the 10 digits from 0 to 9. Most people think that we most often use base 10 because we have 10 fingers. A base can be any whole number bigger than 0 (if it was 0, then there would be no digits). The base of a number may be written next to the number: for instance, 23₈ means 23 in base 8 (which is equal to 19 in base 10).

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NUMBER OF BASE	DIGITS USED	NAMES
2	0, 1	Binary
3	0, 1, 2	Ternary
4	0, 1, 2, 3	Quaternary
5	0, 1, 2, 3, 4	Quinary
6	0, 1, 2, 3, 4, 5	Senary
7	0, 1, 2, 3, 4, 5, 6	Septenary
8	0, 1, 2, 3, 4, 5, 6, 7	Octal
9	0, 1, 2, 3, 4, 5, 6, 7, 8	Nonary
10	0, 1, 2, 3, 4, 5, 6, 7, 8, 9	Decimal/ denary
11	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10	Undecimal
12	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B	Duodecimal
16	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F	Hexadecimal
20	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, G, H, I, J	Vigesimal

The popularity of the base 2, 8 and 16 is because of its use in modern technology.

Counting in Groups of Twos (Binary)

A Binary Number is made up of only 0s and 1s. An example is 110100

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Lesson tags: JSS1 Mathematics, JSS1 Mathematics Evaluation Questions, JSS1 Mathematics Evaluation Questions First Term, JSS1 Mathematics First Term, JSS1 Mathematics Objective Questions, JSS1 Mathematics Objective Questions First Term, Mathematics Lesson Notes, Mathematics Objective Questions

COUNTING IN BASE 2

Number Bases

Counting in Groups of Twos (Binary)

Discussions on Mathematics

Mathematics – JSS1 (Upper Basic 7)

First Term

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Counting in Base 2

COUNTING IN BASE 2

Number Bases

Counting in Groups of Twos (Binary)

Discussions on Mathematics

First Term

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Exam Simulation for JSS1 – SS3

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