Final answer:
To solve for the missing number in the equation 923 + ___ = 1825, subtract 923 from both sides of the equation. The missing number is 902.
Step-by-step explanation:
To solve for the missing number in the equation 923 + ___ = 1825, we can subtract 923 from both sides of the equation.
1825 - 923 = ___
The answer is 902, so the missing number is a) 902.