Page 68 - Math Genius C3

E:\Working\Orange_Education\Math_Genius_3\Open_Files\CHAP_03
\ 01-Oct-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

Experiential Learning
Collaborative Learning
Objective: To reinforce the concept of subtracting 4-digit numbers

Materials Required: Number cards, notebook

Procedures:
Š Make random groups of four students in the class.

Š Each groups gets number cards 0 to 9. Shuffle and keep the cards at the centre

of the group.
Š Pull out any four cards on the sound of the clap.

Š Form the greatest and the smallest possible 4-digit numbers using the digits on

the cards.
Š Each group finds the difference between the numbers.

Š The group with the least difference will win 1 point and the round.

Š Play 10 more rounds. The group with the maximum points wins the game.

Critical Thinking
Challenge Question

1. Given that the face value of * remains consistent in each case, H t O
determine the value of *. * 1 *
– 3 * 7
2. If + + = 420 and + stands for 220, then which 1 * 8
number stands for + – ?

66 Mathematics-3