Page 214 - Math Genius C3

E:\Working\Orange_Education\Math_Genius_3_(08-10-2025)\Open_Files\CHAP_12
\ 12-Oct-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

Here is the table she made.

Kind of Tally Number Project Experiential Learning
books marks of books Collect information
Number
Tally
Story |||| 4 about the number Children marks of children
Sports ||| 3 of boys and girls in Only boys

Comics |||| |||| 10 20 families in your Only girls
G.K. ||||||| 8 neighbourhood. Fill in Both boys
Novels ||||| 6 the table using tally and girls
marks.
PictograPh

When we use pictures or symbols to show information, it is called a pictorial representation

or pictograph.
A pictograph helps us to compare information

easily. Indian Knowledge System
Every pictograph should have the following: People have been using tally marks
since ancient times, even before
• Title: tells what information the pictograph numbers were invented. Cavemen
and early humans scratched lines
gives. on walls, bones, and wood to keep a

• Key: explains the meaning and value of each count of days, animals, or food. The
oldest tally stick ever found is more
picture or symbol. than twenty thousand years old.

Drawing a Pictograph

Ritu's mother records the number of milk bottles sold by a milk booth in a week. Ritu

wants to show this using a pictograph.

Days Monday Tuesday Wednesday Thursday Friday Saturday
Number of milk-bottles sold 40 60 80 50 30 70

To represent the data pictorially, she chooses a milk-bottle as a symbol. She assumes the

symbol of one milk-bottle represents 10 milk-bottles.

She drew (40 ÷ 10) = 4 bottles for Monday, (60 ÷ 10) = 6 bottles for Tuesday, (80 ÷ 10) =
8 bottles for Wednesday and so on.

Number of milk-bottles sold by a milk-booth in a week

Monday

Tuesday

212 Mathematics-3