TWO DIGIT ADDITION (with regrouping)

1
TWO DIGIT ADDITION(with regrouping)
2
In this lesson you will learn to add two-digit
numbers...

• Look at the following addition

3
2 7 3 5 -------
4
1 2 7 3 5 -------

• 2

5
1 2 7 3 5 -------

• 6 2

6
Very good, now try to do this addition
7
5 8 2 5 -------
8
1 5 8 2 5
-------

• 3

9
1 5 8 2 5
-------

• 8 3

10
Now, lets look at another example
11
7 9 1 1 -------
12
1 7 9 1 1
-------

• 0

13
1 7 9 1 1
-------

• 9 0

14
Now you try it
15
1. 1 9 2. 4 8 2 5 3 7
----- ------
16
1. 1 1 9 2. 4 8 2 5
3 7 ----- ------

• 4

17
1. 1 1 9 2. 4 8 2 5
3 7 ----- ------

• 4 4

18
1. 1 1 1 9
2. 4 8 2 5 3 7 -----
------

• 4 4 5

19
1. 1 1 1 9
2. 4 8 2 5 3 7 -----
------

• 4 4 8 5

20
3. 3 3 4. 4 9 5 9 1 6
----- ------
21
3. 1 3 3 4. 4 9 5 9
1 6 ----- ------

• 2

22
3. 1 3 3 4. 4 9 5 9
1 6 ----- ------

• 9 2

23
3. 1 1 3 3 4.
4 9 5 9 1 6 -----
------

• 9 2 5

24
3. 1 1 3 3 4.
4 9 5 9 1 6 -----
------

• 9 2 6 5

25
5. 3 7 6. 7 8 2 3
1 8 ------- ------- 7.
2 5 8. 3 8 3 6 5 4
------- ------
26
1 5. 3 7 6. 7 8 2
3 1 8 -------
------- 0
27
1 5. 3 7 6. 7 8 2
3 1 8 -------
------- 6 0
28
1 1 5. 3 7
6. 7 8 2 3 1 8
------- ------- 6 0
6
29
1 1 5. 3 7
6. 7 8 2 3 1 8
------- ------- 6 0
9 6
30
1 7. 2 5 8. 3 8 3 6
5 4 -------
------- 1
31
1 7. 2 5 8. 3 8 3 6
5 4 -------
------- 6 1
32
1 1 7. 2 5
8. 3 8 3 6 5 4
------- ------- 6 1
2
33
1 1 7. 2 5
8. 3 8 3 6 5 4
------- ------- 6 1
9 2
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INTERNET GAME 1

• INTERNET
• GAME 2

35
THE END