Open Middle®
Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to find the largest (or smallest) possible values for x.
Hint
Where do you want to put the 9?
Where should the 1 go or NOT go?
Where should the 1 go or NOT go?
Answer
For the greatest value, 1x – 9 = 8 and 1x – 8 = 9 both have a solution of 17.
For the smallest value, 9x – 1 = 2 and 9x – 2 = 1 both have a solution of 1/3.
For the smallest value, 9x – 1 = 2 and 9x – 2 = 1 both have a solution of 1/3.
Source: Chase Orton and Mark Goldstein
this link goes to a google slide titled Modifying Ed Units for your classroom… Do you have the update link? Thanks
On 8/25/22 that link took me to a story called “That Girl”