Math Notes from the week of 1/21/13 - Let me know if you cannot access this from your home computer!
This week we are working on the Crisscross, Lattice, and Traditional methods to solve multiplication problems with 2-digits or greater. Please note that the Crisscross method should be used on 2-digit by 2-digit problems. Multiplication problems with multiples or patterns of 10 should be solved mentally. Example: 30 x 80 = 2,400. All other problems can be solved using the Lattice method. Click on the file below to see an example of the lattice method. I have also included videos for 2-digit Crisscross and Lattice.
lattice_method.docx | |
File Size: | 70 kb |
File Type: | docx |