# NUMERATION SYSTEM AND PLACE VALUES-P.7

##### This unit talks about Numeration system and Place values.It shows what they are and how they are used.

Activity:

Mk mathematics book 3 pages 21- 23 and 28- 30

Mk maths bk 4 pg 20

Exercise

Primary Mathematics for Uganda book Pgs 12, 16.

Primary schools MTC book 3pg 11 and 12.

Expanded form of numbers.

Expand. 640

H     T     O

6     4       0         6hundreds 4tens 0ones   = 600+ 40 + 0

Expand 7253

Th   H   T   0

7     2     5     3    7 thousands2hundreds 5tens 3ones     = 7000 + 200+ 50 + 3

Activity:

Mk book 3 page 32

Understanding Maths book 3 page

All numbers have names of their symbols to represent them.

Name   Symbol

One                                                                         1

Two                                                                         2

Three                                                                       3

Four                                                                         4

Five                                                                          5

Six                                                                            6

Seven                                                                       7

Eight                                                                        8

Nine                                                                         9

Ten                                                                           10

Eleven                                                                     11

Thirteen                                                                  13

Fourteen                                                                 14

Fifteen                                                                     15

Sixteen                                                                     16

Seventeen                                                                17

Eighteen                                                                   18

Nineteen                                                                   19

Twenty                                                                      20

Thirty                                                                         30

Forty                                                                           40

Fifty                                                                             50

Sixty                                                                            60

Seventy                                                                       70

Eighty                                                                          80

Ninety                                                                          90

One hundred                                                             100

One thousand up ten thousand                             1000 to 10000

Writing number symbols in figures

Examples

Activity:

Primary school mathematics for Uganda book3 pg 15 and 16.

Primary MTC for Uganda book 4 pg 10 and 11.

MK Bk 3 pg 24.

What number comes before and after?

Before                                   After

24 = 24 – 1= 23                     24 = 24 + 1 = 25

Activity:

Primary school Mathematics page 8- 10

Primary school mathematics Bk 3 pages 6 – 7, 12, 19, 30, 31.

Primary mathematics for Uganda book 3 pages 11 – 12

Values of numbers (digits)

Values of digits represent the size of the numeral in a position it holds.

4 5 6 7

Value of digit 4 = (4 x 1000) It’s place value

4000

Value of digit 5 = (5 x 100) It’s place value

500

Value of digit 6 = (6 x 10) It’s place value

60

Value of digit 7 = (7 x 1) It’s place value

Activity:

Mk Primary Mathematics book 4 page 21

Activity:

Practical work using children’s abaci.

The basic Roman symbols for numbers

Hindu Arabic  Roman Numerals

1                                                                              I

2                                                                              II

3                                                                              III

4                                                                              IV

5                                                                              V

6                                                                              VI

7                                                                              VII

8                                                                              VIII

9                                                                              IX

10                                                                            X

Other Roman numerals include, XX, XXX, XL, L LX, LXX, LXXX, XC and C

Activity:

Reading and writing numbers in Roman numerals.

Application on Roman Numerals

Word sums in Roman Numbers (Numerals)

Activity:

1. Primary MTC for Uganda Bk 4 page 15 – 17
2. Mk Primary Mathematics Bk 4 page 35

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