Categories: Lesson Notes

JSS2 First Term Mathematics Lesson Note – Whole Numbers

The content is just an excerpt from the complete note for JSS2 First Term Mathematics Lesson Note – Whole Numbers. Check below to download the complete DOCUMENT

WEEK 1

WHOLE NUMBERS

CONTENTS

  • Whole numbers in standard form
  • Decimal numbers in standard form
  • Changing from standard form to ordinary numbers
  • Indices

WHOLE NUMBERS IN STANDARD FORM

            A number is said to be in standard form if it is expressed in the form of A x 10n. Where  and  is an integer (positive or negative whole numbers). Standard form is very useful in field of sciences and social sciences for easy presentations and analysis. Examples of numbers in standard form includes: 4 x 109, 5.8 x 102, 5.62 x 104, etc

Examples:

  1. Write the following in standard form:

(a) 90 000 000  (b) 6 000 000 000 000 000 000         (c) 34256.189   (d) 879.45

Solutions

(a). 90 000 000 = 9 x 10 000 000 = 9 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 9 x 107

(b). 6 x 1000 000 000 000 000 000 = 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10  = 6 X 1018

(c). 34256.189 = 3.4256189 x 10 000 = 3.4256189 x 104

(d). 879.45 = 8.7945 x 100 =   8.7945 10 x 10 = 8.7945 x 102

  1. Express each of the following in ordinary forms or full figures:

(a). 7.879 x 105           (b). 6.209 x 104           (c). 4.231 x 106

Solutions:

(a). 7.879 x 105 = 7.879 x 10 x 10 x 10 x 10 x 10 = 7.879 x 100 000 = 787900

(b). 6.209 x 104 = 6.209 x 10 x 10 x 10 x 10 = 6.209 x 10 000 = 62090

(c). 4.231 x 106 = 4.231 x 10 x 10 x 10 x 10 x 10 x 10 = 4.231 x 1 000 000 = 42310000

CLASS ACTIVITY

  1. Express the following numbers in standard forms
  • 50130002 (b) 0.0000032901                   (c) 3518 x 1000000

(d) 0.000400254         (e) 0.000000000235

  1. Rewrite each of the following in ordinary forms
  • 00009 x 105 (b) 8.543 x 10-4    (c) 6.653 x 10-6

To gain full access to the note: DOWNLOAD FILE

Sunday

Share
Published by
Sunday

Recent Posts

List of Universities Offering Veterinary Medicine in Nigeria

Veterinary medicine is the branch of medicine that deals with the prevention, diagnosis, and treatment…

4 months ago

List of Universities Offering Anthropology in Nigeria

Anthropology is the scientific study of human beings and their cultures. It encompasses a wide…

4 months ago

List of Universities Offering Sociology in Nigeria

Sociology is the scientific study of human society, culture, and behavior. It examines the social…

4 months ago

List of Universities Offering Social Work in Nigeria

Social Work is a profession dedicated to helping individuals, families, and communities to cope with…

4 months ago

List of Universities Offering Religious Studies in Nigeria

Religious studies is an academic discipline that explores the beliefs, practices, and history of various…

4 months ago

List of Universities Offering Public Administration in Nigeria

Public administration is the field of study and practice that focuses on the organization and…

4 months ago