Open Middle®
Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to create expressions that produce one rational root and three irrational roots.
Hint
What perfect square and/or cube root numbers are there from 1 to 9?
Answer
One possible answer is 9 & 3
Source: Norma Gordon
I was thinking 2 an 8
i was thinking 3 an 8. might did it wrong oh well i tried
4+5
2-1
7×6
9/3
Are you asking them to use all of the digits or are you asking them to use the same pair of digits? To me the instructions are a little unclear.
9 & 4
9+4=13
9-4=5
9*4=36
9/4=2.25