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10 less
than 30
1 more
1 less than
than 30 10+20 30
30
10 more
than 30
Now, fill the remaining places in the grid according to the instruction given in
each box.
SECRET MESSAGE: DECODING
Decoding is the process of converting a hidden message to a meaningful text.
The hidden message or secret message can be in the form of a symbol, number,
picture, letter, or a pattern.
For example, if 1 2 3 then the secret message
will be decoded as 132112.
Recap
In a number pyramid, the number in each space is the sum of the two
numbers below it.
In a number grid each grid is replaced by the value of its result.
Decoding is the process of converting a hidden message to a meaningful
text.
Exercise
A. Tick ( ) the correct option.
1. The hidden message or secret message can be in the form of a symbol,
number, picture, letter, or a .....................................
a. Pattern b. Sequence c. Decoding
52 Play (Ver. 2.1)-II

