The document explains how to perform the multiplication algorithm of partial products for a 2 by 2 multiplication problem. It shows setting up the problem by writing the numbers in a grid and multiplying the numbers in the tens and ones places, placing the partial products below the grid and adding them to get the final answer. An example using the numbers 1234 is provided to demonstrate the process.

1. How to do Partial Products 2 by 2 By Mr. Kish

2. An example of partial products x

3. An example of partial products x Add zeros if you need them. 0 0

4. An example of partial products x Multiply numbers in tens place Write the product below on the first line 0 0

5. An example of partial products x Multiply top tens by bottom ones Write the product on the second line 0 0

6. An example of partial products x Multiply top ones by bottom tens Write product on third line 0 0

7. An example of partial products x Multiply top ones by bottom ones Write product on fourth line 0 0

8. An example of partial products x Add partial products to get final answer 0 0 +

9. An example with numbers

10. An example of partial products x 1 2 3 4

11. An example of partial products x 1 2 3 4 Add zeros if you need them. 0 0

12. An example of partial products x 1 2 3 4 Multiply numbers in tens place Write the product below on the first line 0 0 300 10 * 30

13. An example of partial products x 1 2 3 4 Multiply top tens by bottom ones Write the product on the second line 0 0 300 40 10 * 4

14. An example of partial products x 1 2 3 4 Multiply top ones by bottom tens Write product on third line 0 0 300 40 60 2 * 30

15. An example of partial products x 1 2 3 4 Multiply top ones by bottom ones Write product on fourth line 0 0 300 40 60 8 2 * 4

16. An example of partial products x 1 2 3 4 Add partial products to get final answer 0 0 300 40 60 8 + 408