find the product ot the greatest4-digit number and the greatest 3-digit number (use distributive property to solve)
The greatest 4 - digit number is 9999.
The greatest 3 - digit number is 999.
So, the product of these two numbers using distributive property
= 9999 * 999
= 9999 * [ 900 + 99 ]
= 9999 * 900 + 9999 * 99
= 8999100 + 989901
= 9989001
- 36