The answer to 15 times 9 is 135.
To understand why, you can think of multiplication as repeated addition. When you multiply 15 by 9, you are essentially adding 15 together 9 times:
- 15 + 15 + 15 + 15 + 15 + 15 + 15 + 15 + 15
If you add these up, you will reach 135. Another way to visualize this is to break it down into simpler parts. You could also do:
- 10 times 9 equals 90
- 5 times 9 equals 45
Then, you can add those two results together: 90 + 45 = 135. So, whether you think of multiplication as repeated addition or break it down into parts, the result is the same: 15 times 9 equals 135.