Open Middle®
Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make two true number sentences.
Hint
What are the factors of 64?
What are the prime factors of 64?
What numbers times itself multiple times can equal 64?
What are the prime factors of 64?
What numbers times itself multiple times can equal 64?
Answer
2^6
4^3
8^2
4^3
8^2
Source: Robert Kaplinsky
The directions should say “three true number sentences,” no?
It could. I only want them two find two of the three.
I think one should consider 64^1 as well, because the first two answers allowed 6 and 4 digits to repeat