MTH/P/5: NUMBER PATTERNS AND SEQUENCES

Types of numbers.

1)       Whole numbers       0, 1, 2, 3, 4, 5, ………….

2)       Counting numbers/ Natural numbers                1, 2, 3, 4, 5, ………….

3)       Odd numbers: These are numbers that give a remainder when divided by 2

{1, 3, 5, 7, ……………….}

4)       Even numbers: These are ones that are exactly disable by two

{0, 2, 4, 6, 8, 10, ……………….}

5)       Prime numbers: These are numbers with only two factors.

{2, 3, 5, 7, 11, 13, ……………….}

6)       Composition numbers: These are numbers with more than 2 factors

{4, 6, 8, 9, 10, 12, ……………….}

7)       Square numbers: These are numbers got by multiplying a number by its self.

{1, 4, 9, 16, 25, ……………….}

8)       Cubic numbers: These are got by multiplying the same number three times.

{1, 8, 27, 64, ……………….}

9)       Triangular numbers: These are got by adding consecutive counting numbers.

{1, 3, 6, 10, 15, 21, ……………….}

+2 +3 +4 +5   +6

MULTIPLES AND L.C.M

Take note of the limits

*Less than

*From to

*between ……………. And ………..

*The first………………..

Examples

  1. i) List down the multiples of 6 between 20 and 40.

{24, 30, 36}

  1. ii) List down the first 5 multiples of 12.

M12 = {12, 24, 36, 48, 60}

 

Finding lowest common multiple by listing down multiples

Example

LCM

DIVISIBILITY TESTS

These show which number is exactly divisible by another given number.

 

Divisibility test for 2.

A number is divisible by 2 if the last digit is an even number

i,e 0, 2, 4, 6, 8, …………..

 

Divisibility test for 3.

A number is divisible by 3 if the sum of its digits is divisible by 3.

Example.

State whether 144 is divisible by 3.

Sum of the digits              1 + 4 + 4

= 9

9 is divisible by 3

144 is divisible by 3.

 

Divisibility test for 4

A number is divisible by 4 if its last two digits are zero or divisible by 4.

 

Divisibility test for 5

A number is divisible by 5 if its last digit is either 0 or 5.

 

Divisibility test for 10

A number is divisible by 10 if its last digit is 0.

nabulumba hindu and Lindah Nakabiri and IVAN MUWANGUZI

Leave a Comment
Share
Published by
nabulumba hindu and Lindah Nakabiri and IVAN MUWANGUZI

Recent Posts

Matrix Transformations

Matrix Transformations IntroductionHaving been introduced to transformations and matrices earlier on, you will now represent these transformations in matrix…

3 days ago

Becoming Ultimate Masters: Harnessing your oneness with God, manifesting and having a fulfilling life

This compilation is inspired by the need to help as many human beings align themselves…

5 days ago

Download Effective Digital pedagogy and 21st century learning facilitation

Effective Digital Pedagogy is aimed at offering practical digital skills & knowledge to teachers, lecturers,…

5 days ago

Download Digital Communication Essentials and Multimedia Journalism Skills

You can download the whole ebook here below Innovations in digital communication technologies and the…

5 days ago

TOPIC 9: ROCKS AND MINERALS.

ROCKS AND MINERALS LEARNING OUTCOMES The learner should be able to: a. understand how igneous,…

1 week ago

TOPIC 8: WATER.

WATER LEARNING OUTCOMES The learner should be able to: a. understand the occurrence of wateras…

1 week ago