Complete the Decreasing Sequence: 900, 800, and Beyond

To find the pattern in the sequence $900,900, 900,800, \ldots$, we need to determine the difference between successive terms.

Step 1: Calculate the difference between the first two terms:

$900,800 - 900,900 = -100$

Step 2: The sequence decreases by 100. Using this consistent decrease, we can determine the next terms:

• From $900,800$, subtract 100: $900,800 - 100 = 900,700$
• From $900,700$, subtract 100: $900,700 - 100 = 900,600$
• From $900,600$, subtract 100: $900,600 - 100 = 900,500$

Therefore, the completed sequence is $900,700, 900,600, 900,500$.