Multiplying Two-Digit Numbers (Elementary)

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make the smallest (or largest) product.

Hint

What does the number on the left represent?  What does the number on the right represent?

Answer

96 · 87 is one answer for the largest product.  13 · 24 is the smallest product.

Source: Robert Kaplinsky

Print Friendly, PDF & Email

Check Also

Comparing Fractions

Directions: Using the numbers 1-9, each one time only, fill in the blanks to make …

19 comments

  1. Here is a Desmos visual that might support the task.

    https://www.desmos.com/calculator/44rd3rwkpk

    • Robert Kaplinsky

      Nice Rusty! Too bad there isn’t a built in way to restrict duplicate numbers. Two thoughts:
      – I wonder if there is a difference between a horizontal and vertical representation?
      – Is there value in restricting a and b to 12 to 98? (11 or less and 99 and 100 are not possible)

  2. Raiden From 3rd Grade

    I Did 12×5 I Dint Try For Largest Or Smallest My Whole Answer Was This:
    12+12+12+12+12= 60
    24 24 12=60
    24+24+12=60
    48+12=60

  3. 24×13=212

    87×96=1152

  4. 12*34=38 and 10*25=25

  5. 96×87 is the biggest.

  6. 14×23=322

  7. michael TROTTER

    18 times 28=2204

  8. 32*34=1,088

  9. 96 x 87=8,282

  10. 97×86 biggest
    13×24 smallest

  11. 98 x 76 largest
    13*24

  12. smallest is 13 x 24

Leave a Reply to Robert Kaplinsky Cancel reply

Your email address will not be published. Required fields are marked *