The content is just an excerpt from the complete note for JSS1 First Term Mathematics Lesson Note – Whole Numbers. Check below to download the complete DOCUMENT
WEEK 1
TOPIC: WHOLE NUMBERS.
CONTENTS:
- Development of number system
- Place values
- Counting: tens; hundreds; thousands; millions; trillions
- Translating numbers written in figures to words.
- Quantitative reasoning.
DEVELOPMENT OF NUMBER SYSTEM
There were many ancient ways of writing numbers part of which are the Hindu Arabic system, tally system, Roman system, etc. While so many have gone into extinction, the Roman system is still in use up to date.
ROMAN NUMBER SYSTEM
The Roman number system was developed about 300BC. The Romans used capital letters of the alphabet for numerals. Table 1.1 shows how to use the letters.
Table 1.1
EXAMPLE 1: Write these numbers in Roman numerals.
- a) 25 b) 105 c) 49 d) 2011
Solution
- a) 25 = XXV
- b) 105 = CV
- c) 49 = XLIX
- d) 2011 = MMXI
EXAMPLE 2: What numbers do these Roman numerals represent?
- XLVI 2. XCIX 3. MMCMLIV 4. MMMDCI
Solution : 1. XLIV = 46 2. XCIX = 99 3. MMCMLIV = 2954 4. MMMDCI = 3601
CLASS ACTIVITY
- Write these numbers in Roman Numerals
- a) 352 b) 1 257 c) 2456
- Add the following Roman numerals and give your answers in figures
- a) XXV and CV b) XXIV and MDCIX.
What are whole numbers?
Whole Numbers are also called Integers. There are positive Integers and negative Integers. Examples of positive integers are 1, 2, 3, 4, 5, etc., while examples of negative integers are – 1, – 2, – 3, – 4, – 5, etc.
To gain full access to the note: DOWNLOAD FILE
