3- concepts of addition 3- concepts of addition.pptx

3- concepts of addition

1. There are 14 boys and 14 girls students in Grade 3 . What is the total number of students in Grade 3?

2. Addition of Whole Numbers

3. Learning Target Know and apply the properties of addition in mental computation Add mentally two- to three-digit numbers using appropriate strategies

4. Addition is the operation of putting quantities or number to get one value called the sum Sum is the result in addition.

5. Sum   Addends Addends

6. Examples in addition of whole numbers + = =

7. There are three properties of addition Identity P roperty of Addition Order Property or Commutative Property of Addition Grouping Property or Associative Property of Addition

8. Identity Property of Addition If zero (0) is added to any number, the answer is the number itself. Zero is called the identity element of addition.

9. Examples   8        

10. Order P roperty or Commutative Property of Addition In this property the addends change, the answer or the sum is still the same.

11. Examples 3. 4. 5.            

12. Complete the following equation 3. 4. 5.  

13. Grouping P roperty or Associative Property of Addition In this property changing the grouping of the addend does not change the sum

14. Examples 3. 4. 5.