Determine the product of the greatest number of three digits and the greatest number of four digits. (Use distributive property)

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Solution

Given: Determine the product of the greatest number of three digits and the greatest number of four digits. (Use distributive property).
The greatest number of three digits $= 999$
The greatest number of four digits $= 9999$
The product of the greatest number of three digits and the greatest number of four digits:
$999 \times 9999 = 999 \times (10000 - 1) \sin c e w r i t i n g 9999 a s 10000 - 1 = 999 \times 10000 - 999 \times 1 = 9990000 - 999 = 9989001$
Therefore, the product of the greatest number of three digits and the greatest number of four digits is $9989001$ .

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