Page 160 - Math Genius C4

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\\September 30, 2025 9:50 AM Bharat Arora P-9 Reader _________________________ Date: ___________________74

2. extend the pattern by drawing the given shape.
(a) (b) Think Tank Logical Thinking
1. Decode the message written in code: 9 12 15 22 5 9 14 4 9 1
2. Create a code for your friends and ask them to decode it.

Practice time 8e
(c) (d)

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
3. Complete and colour these tiling patterns. 1. Using the above table, write the following messages in code language.

(a) (b)
(a) BE HERE NOW _________________________________

(b) BELIEVE IN YOURSELF _________________________________

(c) DO IT NOW _________________________________

4. Can you identify 4 examples of tessellation in everyday life? It may be in your (d) DO YOUR BEST _________________________________

home, at a park, or elsewhere. (e) DREAMS COME TRUE _________________________________

coDing anD DecoDing 2. Using the above code, decode the following messages.

Coding is a method of expressing messages in a secret way. These messages can be (a) 6 15 3 21 19 1 14 4 23 9 14 ___________________________
written using numbers in place of letters with the help of some patterns. Look at the (b) 9 20 9 19 16 15 19 19 9 2 12 5 ___________________________
following table in which a number is given for each letter. (c) 25 5 19 25 15 21 3 1 14 ___________________________

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 (d) 14 5 22 5 18 7 9 22 5 21 16 ___________________________

By using a number for a letter, we can write many code messages.
example 1: Write the following messages in code language using the above table.

(a) BYE-BYE 2 25 5 - 2 25 5

(b) HAPPY BIRTHDAY! 8 1 16 16 25 2 9 18 20 8 4 1 25!
(c) RED COLOUR 18 5 4 3 15 12 15 21 18

(d) GOOD MORNING 7 15 15 4 13 15 18 14 9 14 7

example 2: Decode the following messages using the above table.
(a) 8 5 1 12 20 8 9 19 23 5 1 12 20 8 HEALTH IS WEALTH

(b) 4 18 5 1 13 2 9 7 DREAM BIG

(c) 2 5 3 1 18 5 6 21 12 BE CAREFUL

(d) 1 12 12 9 19 23 5 12 12 ALL IS WELL

158 Mathematics-4