Page 13 - BUSINESS MATHEMATICS MODULE 1 (WHOLE)_revised 10.20.2020

WALKTHROUGH
LESSON 1: NUMBER RECOGNITION

A. READING AND WRITING NUMBERS

The world owes to the Hindus and the Arabic the evolution and the propagation of the

number system. This system of numeration is called the Hindu-Arabic system. Most of the world M1_L1
today use the Hindu-Arabic System of numeration. When we talk of numeration, we are referring

to the study of numerals and their properties.

The Hindu-Arabic system of numeration uses 10 as its base. Basic to business
mathematics is the decimal system with the ten basic digits-0,1,2,3,4,5,6,7,8 and 9. Every number

comprises one or more of these digits, the values of which depend upon their positions or places in
the given number. There are ten distinct digits to tell the number of ones, the number of hundreds,

thousands, and so on. Thus, ten-ones is ten, ten-tens is one hundred, ten hundred is one thousand,
and so on.

The following chart would illustrate this concept.

BILLIONS MILLIONS THOUSANDS HUNDREDS DECIMALS

Hundreds Tens Ones Hundreds Tens Ones Hundreds Tens Ones Hundreds Tens Ones Decimal Points Tenths Hundredths Thousandths Ten Thousandths

Ex. 1 8 5 , 3 6 2 , 1 0 9 , 4 7 4 .

Ex. 2 4 2 9 , 7 6 0 , 3 1 2 . 2 5

Ex. 3 5 , 6 0 3 . 1 7 3

Example 1 would be written as 86.362,109.474. This is read as: "eighty-five billion, three
hundred sixty-two million, one hundred nine thousand and four hundred seventy-four.
Example 2 would be written as "four hundred twenty-nine million, Seven hundred sixty
thousand, three hundred twelve, and twenty-five hundredths.
Example3 would be written as: "five thousand, six hundred three, and one hundred
seventy-three thousandths.

LESSON 1: NUMBER RECOGNITION 1.1 | P a g e
Source: Business Mathematics by Cristobal M. Pagoso