Problem of the Day Problem of the Day Multiplication next

Arrange the four dominoes to form a 3-digit and a 1-digit factor with their product. Think of each half of a domino as separate 1-digit number, but you cannot separate dominoes.

In order to solve my problem, I must arrange the dominoes so that I have four digits as factors and four digits as my product. I know that I must use two dominoes for my 3-digit factor and one digit factor. I also must use two dominoes for my four digit product. I cannot separate the dominoes. The digits on the dominoes are 4, 5, 1, 4, 2, 1, 3,5. next

After several attempts using trial- and-error, my answer would be 4,1,5 × 3 = 1,2,4,5. This answer is correct because 415 × 3 = 1, × 4 does not equal 2, × 2 does not equal 4, × 3 does not equal 2, × 3 does equal 1,245 next

Answers: 415 × 3 = 1, × = next