Page 39 - Math Genius C4

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\\September 30, 2025 9:38 AM Bharat Arora P-9 Reader _________________________ Date: ___________________74

3. Adding Zero (0): If we add zero (0) to any number, the sum is the number itself.
examples: (a) H T O (b) H T O
Think Tank
2 8 5 0 Add 4256 + 10744 + 1354.

+ 0 Same + 4 5 3 Same Also, check your answer
2 8 5 4 5 3 using grouping property of
addition.
So, 285 + 0 = 285. So, 0 + 453 = 453.

4. Adding 1: If we add 1 to any number, the sum is the successor of the given
number.

examples: (a) 4752 + 1 = 4753 (b) 43281 + 1 = 43282
exploring addition

Two numbers can be added in different ways. Let us see some of them.
Let us add 245 and 123 in different ways.

Method 1 Method 2

By splitting only the smaller number By splitting only the greater number

245 + 123 245 + 123

245 + 100 + 20 + 3 200 + 40 + 5 + 123

Step 1: 245 + 100 = 345 If we add 100 to Step 1: 200 + 123 = 323
Step 2: 345 + 20 = 365 any number, only Step 2: 323 + 40 = 363
the digit in the
Step 3: 365 + 3 = 368 hundreds place Step 3: 363 + 5 = 368
Thus, 245 + 123 = 368. increases by 1. Thus, 245 + 123 = 368.

Method 3 Method 4

By splitting both the numbers Counting in hundreds, tens and ones

245 + 123 245 + 123

200 + 40 + 5 100 + 20 + 3 100 + 10 + 10 + 3

Step 1: 200 + 100 = 300 +100 +10 +10 +3
Step 2: 40 + 20 = 60

Step 3: 5 + 3 = 8 245 345 355 365 368
Step 4: 300 + 60 + 8 = 368

Thus, 245 + 123 = 368. Thus, 245 + 123 = 368.

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