Rules of Addition
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•
Mathematics
•
4th Grade
•
Medium
A P
Used 3+ times
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4 Slides • 2 Questions
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Rules of Addition
2
1. Order of addends
The change of the order of the addends does not change the sum.
Example : 100 + 500 = 600
500 + 100 = 600
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2. Adding by grouping
The sum of three or more numbers does not change even when their grouping is changed.
Example - (33,752 + 4,796) + 45 = 33,752 + (4,796 + 45) = 38,593
Example - (10+20) + 30 = 10 + (20+30)
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Adding 0, 1, 10, 100, 1000
57469 + 0 = 57469
213 + 1 = 214
33256 + 10 = 33266
145632 + 100 = 145732
56987 + 1000 = 57987
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