Home > Grade 4 > Multiplying Mixed Numbers by Whole Numbers

Multiplying Mixed Numbers by Whole Numbers

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

Hint

Hint

How can we tell whether it would be better to put the larger numbers in the whole number, numerator, or denominator?

Answer

Answer

The current best answer for largest product is 8 7/1 * 9. The current best answer for smallest product 2 3/9 * 1

Source: Robert Kaplinsky

Print Friendly, PDF & Email

Check Also

Using 1/2 as a Benchmark

Directions: Using the digits 1 through 9 only one time each, fill in the blanks …

3 comments

  1. In presenting this problem, as an introduction to Fraction Multiplication, I find it hard to justify that the “mixed number” can include an improper fraction like in the sample answer ( 8 7/1)

Leave a Reply to Jill Hohmann Cancel reply

Your email address will not be published.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