Once students get rolling with multiplication menus, they start to work with more complicated menus. A good example of a more complicated menu is the menu for 17 described below. Be sure to read the thinking process as well.
1x17=17
2x17=34 (Double 17 is 34)
10x17= 170 (17 with a 0 on the end)
20x17= 340 (2x17 answer with a 0 on the end)
5x17=85 (half of the answer for 10x17-- half of 100 is 50 and half of 70 is 35, 50+35=85)
3x17=51 (17+34)
30x17=510 (3x17 with a zero on the end)
Using this menu kids could mathematically figure out how to divide 578 by 17. For example, I could start by dividing 30 groups of 17 (which uses 510). 578-510 is 68. I need to use up 68 more. 68 is double 34 so I could divide out four more groups of 17 using 68.
