Open Middle®
Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to find the closest product to 500
Hint
How can your understanding of what one-digit numbers multiply to equal 50 help you pick numbers for this problem?
Answer
83 x 6 = 498 is the closest that my students and I found.
Source: Jessica Goree
I can confirm that 83 * 6 = 498 is the best possible solution and there’s no other product of a one-digit-number and a 3-digit number that comes closer to 500 than 83 * 6. The second best solution is 56 * 9 = 504
83 times 6
i know that 83 is a times tabol of 400 so times that by 6 you get 498
I made up 50 x 10= 500
83 x 6= 498. close to 500.
I got 55×9 which equals 500
495*
56 X 9 is the closest to 500 # 56 X 9 = 513
you can do 50×10 or you could do 83×6
90 times 5
82 x 7 = 574
83 x 6 would be close to 500
48 times 9 = 432