Open Middle®
Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to get the difference that is as close to 1 as possible.
Hint
What digit should go in the ones place?
Answer
1.3 – 0.29
1.4 – 0.39
1.5 – 0.49
1.6 – 0.59
1.7 – 0.69
1.8 – 0.79
1.4 – 0.39
1.5 – 0.49
1.6 – 0.59
1.7 – 0.69
1.8 – 0.79
Source: Giselle Garcia
What about 1.2 – 0.21 = 0.99?
“1.2 – 0.21 = 0.99” has two 9’s.
uses 1, 2, and 9 twice so it’s invalid
1.9 – .9= 1
There are two nines and you can’t use zeros
1.1-0.09=1.01
1-0.02=0.98
In the first one there are two ones and for the second one you can’t use zeros
1.2 -0.21 = 0.99
This is my corrected answer : 1.6 – 0.58 = 1.02
Nice, but, why wouldn’t you use 0.59? Am I missing something?
1.9-9
1.2-0.34=0.86
1.30-0.24=1.06
1.90-0.87=1.03
My last drawing is my answer this was hard!
I put 1.2 – 0.21 =0.99
1.3-0.42=0.88
1.5 – .49
1.5 – 0.49 = 1.1
1.7- 0.7
3.9-2.9
1.30-0.30
1.6 – 0.58 = 1.02
1.3 – 0.29
1.4 – 0.39
1.5 – 0.49
1.6 – 0.59
1.7 – 0.69
1.8 – 0.79