Without multiplying, tell which is greater : 0.75 x 81 or 0.9 x 81. explain.

0.9 * 81 is greater

Step-by-step explanation:

Since one of the factors is the same in both problems, and all numbers are positive, the greatest result will obtain from the problem with the largest factor that is different.

0.90 > 0.75 ... so the product 0.90 * 81 is greater than 0.75 * 81