Write a subtraction fact that will give the same difference as 15-7.
The Correct Answer and Explanation is:
Correct Answer:
A subtraction fact that will give the same difference as 15 minus 7 is 14 minus 6.
Explanation
Subtraction facts are basic subtraction problems that help us understand number relationships. The goal is to find another subtraction expression that has the same result (difference) as the original one.
The original subtraction problem is 15 – 7, which equals 8. We are looking for a different subtraction problem that also equals 8. To do this, we can think about pairs of numbers where the larger number minus the smaller number results in 8.
Let us test a few:
- 14 – 6 = 8 ✅
- 13 – 5 = 8 ✅
- 12 – 4 = 8 ✅
- 11 – 3 = 8 ✅
- 10 – 2 = 8 ✅
- 9 – 1 = 8 ✅
Each of these is a valid subtraction fact with the same difference as 15 – 7. The question asked for just one such fact, so 14 – 6 is a correct choice.
These related subtraction facts are helpful because they show how subtraction is connected to addition. For example, if 14 – 6 = 8, then it also means 8 + 6 = 14. Practicing these fact families strengthens mental math skills and helps in solving more complex problems faster.
Understanding different ways to reach the same answer improves flexibility in thinking. If someone forgets what 15 – 7 is, but remembers that 14 – 6 is 8, they can use that fact to find the answer. It also lays a strong foundation for solving equations, estimating, and checking work.
So, by knowing subtraction facts like 14 – 6 = 8, students can confidently and quickly recognize patterns in numbers, making math more intuitive and less reliant on memorization.
