1. Lattice multiplication (327 x 28) 327 2 8

2. 327 2 8

3. 0 6 327 2 8

4. Lattice multiplication (327 x 28) 0 6 0 4 327 2 8

5. Lattice multiplication (327 x 28) 0 6 0 4 1 4 327 2 8

6. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 327 2 8

7. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 327 2 8

8. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 327 2 8

9. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 Now add the diagonals 327 2 8

10. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 Now add the diagonals 327 2 8

11. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 6+5+4 = 15 327 2 8

12. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 65 1 327 2 8

13. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 65 1 1+1+4+1+4=11 327 2 8

14. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 327 2 8

15. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 1+6+2=9 327 2 8

16. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 9 327 2 8

17. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 90 327 2 8

18. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 90 Now read off the digits according to the diagonal place value columns 327 2 8

19. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 90 6 is in the ones column 5 in the tens 1 in the hundreds 9 in the thousands 0 in the ten-thousands 327 2 8

20. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 90 6 is in the ones column 5 in the tens 1 in the hundreds 9 in the thousands 0 in the ten-thousands So 327 x 28 = 9156 327 2 8

21. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 90 Now calculate 327 x 28 by another method. Can you see how your method is similar to this one?

22. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 90 Did you write out all 6 partial products separately? (like this) 327 x 28 56 160 2400 140 400 6000 9156

23. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 90 Did you write out all 6 partial products separately? (like this) Or did you use a condensed version? (like this) 327 x 28 56 160 2400 140 400 6000 9156 327 x 28 2616 6540 9156

24. Lattice multiplication (327 x 28) 0 6 0 4 1 4 2 4 1 6 5 6 6 5 1 1 1 90 Did you write out all 6 partial products separately? (like this) Or did you use a condensed version? (like this) Challenge: see if you can find each of the 6 partial products in the lattice multiplication! 327 x 28 56 160 2400 140 400 6000 9156 327 x 28 2616 6540 9156