Order Numbers

Directions: Using the digits 0 through 9 at most one time each, place a digit in each box to make a two-digit number that has a value between given numbers.


Can you decompose the numbers into bundles of tens and ones? What tools could you use?


There are many solutions including:
12, 35, 40, 41, 56, 78, 88, 93, 107
21, 35, 40, 41, 53, 78, 88, 96, 107

Source: Thach-Thao Phan

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Directions: Use the digits 1-9, at most once, to complete the equation. What is the …


  1. This is an excellent problem for ordering numbers, challenging students to do deeper thinking, where they might conclude through their efforts, that there is more than one correct answer.

  2. 20,35,37,41,45,76,88,89,107

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