When you count backward, each next number is 1 less than the one before it. This is the same as subtracting 1 each time.
If the sequence starts at 12 and you need to continue backward:
Look at your answers and make sure each number is exactly one less than the one before it. If you move from 15 to 13, you skipped 14, so check again.
Counting backward gets easier if you say the numbers out loud: “12, 11, 10, 9...” This helps keep the order correct and prevents skipping numbers.
© 2023-2026 AI MATH COACH