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Chapter 1: Numbers: By: Tr. Abi Year

Chapter 1 focuses on the concept of standard form in mathematics, explaining the roles of base, exponent, and coefficient. It provides examples of converting large and small numbers into standard form, emphasizing the importance of simplifying the coefficient to two decimal places. The chapter includes exercises for practice and answers for evaluation.

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AMMA'S KITCHEN
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21 views6 pages

Chapter 1: Numbers: By: Tr. Abi Year

Chapter 1 focuses on the concept of standard form in mathematics, explaining the roles of base, exponent, and coefficient. It provides examples of converting large and small numbers into standard form, emphasizing the importance of simplifying the coefficient to two decimal places. The chapter includes exercises for practice and answers for evaluation.

Uploaded by

AMMA'S KITCHEN
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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CHAPTER 1: NUMBERS

By: Tr. Abi


For: Year 9
1.4 Standard Form
Base
Exponent

5
A x 10

The meaning of ‘base’ and


Coefficient ‘power’ are same .

Focus:

1. 1 ≤ A < 10 ; Simplify A to two decimal places.

2. The exponent is static

3. The base represents the number and direction of moves


1.4 Standard Form

E.g: Express the following numbers in standard form


a)456000000

To the right (+)

= 456000000 The number of moves represents the value of base

= 4.56 × 108 The direction of moves represents the sign (-/+) of the base
1.4 Standard Form

E.g: Express the following numbers in standard form


b)0.0000002567

To the left (-)

= 0.00000002567 The number of moves represents the value of base

= 2.567 × 10−8 The direction of moves represents the sign (-/+) of the base

= 2.57 × 10−8 Simplify to 2 decimal places


Exercise 1.4: Evaluate each of the following.
Exercise 1.4: Answers.

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