The document provides steps for adding multi-digit numbers with regrouping. It explains that when adding numbers in columns, if the total in a column is 10 or more, you regroup by adding 1 to the column to the left and carrying the 1 to the next column. It then works through an example of adding 3,243 mathematics books and 4,659 science books. Finally, it provides additional practice problems for readers to try adding multi-digit numbers themselves.

1. MATHEMATICS 3

2. ADDITION WITH
REGROUPING

3. How to add four- to five-
digit numbers with
regrouping?

4. Step 1:
Write the numbers
in columns.

5. Step 2:
Add the ones, then tens,
the hundreds, the
thousands, and so on up to
the greatest place value.

6. Step 3:
Regroup to the next
higher place value when
the answer in one
column is 10 or more.

7. Abiva Publishing House
printed 3 243 mathematics
books and
4 659 science books. How
many books on the two
subjects did the company
print?

8. In order to find the total
numbers of books the
company printed, we have
to add the given numbers.

9. 3 243 + 4659 =
?

10. Step 1:
Write the numbers
in columns.

11. thousands hundreds tens ones
3 2 4 3
+ 4 6 5 9

12. Step 2:
Add the ones, then tens,
the hundreds, the
thousands, and so on up to
the greatest place value.

13. Step 3:
Regroup to the next
higher place value when
the answer in one
column is 10 or more.

14. thousands hundreds tens ones
3 2 4 3
+ 4 6 5 9
12

15. thousands hundreds tens ones
3 2 4 3
+ 4 6 5 9
2
1

16. thousands hundreds tens ones
3 2 4 3
+ 4 6 5 9
10 2
1

17. thousands hundreds tens ones
3 2 4 3
+ 4 6 5 9
0 2
1
1

18. thousands hundreds tens ones
3 2 4 3
+ 4 6 5 9
9 0 2
1
1

19. thousands hundreds tens ones
3 2 4 3
+ 4 6 5 9
7 9 0 2
1
1

20. Try to add:
15 632, 14 356, 16 120

21. Ten thousands thousands hundreds tens ones
2 5 6 3 4
4 7 9 7 0
3 4 5 8 9
13
+

22. Ten thousands thousands hundreds tens ones
2 5 6 3 4
4 7 9 7 0
3 4 5 8 9
19 3
1
+

23. Ten thousands thousands hundreds tens ones
2 5 6 3 4
4 7 9 7 0
3 4 5 8 9
21 9 3
1
1
+

24. Ten thousands thousands hundreds tens ones
2 5 6 3 4
4 7 9 7 0
3 4 5 8 9
18 1 9 3
2 1
1
+

25. Ten thousands thousands hundreds tens ones
2 5 6 3 4
4 7 9 7 0
3 4 5 8 9
10 8 1 9 3
2
1 1
1
+

26. 15 632+14 356+16 120
= 108 193

27. Try This!!!
32 674+23 810+26 212+
12 202=?

28. 1
32 674
23 810
26 212
+ 12 202
94 898
1
1

29. MATHEMATICS 3