Open Middle®
Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make a pattern that changes by the same amount each time.
Hint
Have you tried using a hundreds chart to help? Are the numbers in your pattern increasing or decreasing?
Answer
There are many answers, and here are some of them: 19,28,37,46…,18,27, 36,45…, 73, 62, 51, 40… 62, 73, 84, 95…,
92, 83, 74, 65…
92, 83, 74, 65…
Source: Brian Errey
12 34 56 78
19,28,37,46…,18,27, 36,45…, 73, 62, 51, 40… 62, 73, 84, 95…,
92, 83, 74, 65…
Hello! I did this question, and your first answer was the same as mine！
12, 34, 56, 78, 9…
12 – 34 – 56 – 78
15, 26, 37, 48
9, 18, 27, 36, 45 54, 63, 72
7,14,21,28,35,42,49,56
10,20,30,40,50,60,70,80
9, 18, 27, 36, …
18,27, 36,45
9,27,45,63,81
05 – 16 – 27 – 38 – 49
subtract 0 with 5 , 6 with 1 , 7 with 2 , all end up at 5 , pattern is subtracting one from other in two digit
81-9=72-9=63-9=54-9 must use number zero through nine without repeating any number with the subtotal