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SAI International School
Sub – Mathematics
Class - IV
Topic – Patterns
Sub-topic 2: - Coding & Decoding
Practice Time:
Subjective Questions
1. Code the following messages.
a. DO NOT WORRY BE HAPPY.
b. THE CAT SAT ON THE MAT.
c. I LOVE MATHEMATICS
2. Decode the following messages.
a. 19,20,1,25 19,1,22,5
b. 1,14 1,16,16,12,5 1 4,1,25 11,5,5,16 20,8,5
4,15,3,20,15,18 1,23,1,25.
Objective Questions
1. If a= 1, then m=?
a) 12
b) 14
c)15
d)13
