1 2 3 4 5 6 7 8 9 = 100 Challenge: Place + and - math symbols between the numbers above to make the equation true. Use + and - a total of three times. Do not rearrange the numbers.
Ans 123-45-67+89=100
Put numbers 7, 8 and 9 at the corners of a triangle. Now place 1, 2, 3, 4, 5, 6 in twos on each side to make the same total on all three sides (include the numbers at the corners)?
Arrange all the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 to give four different square numbers. (You make a square number when you multiply something by itself, so 49 is square because it is 7 times 7)
