17Min and 38mind explain the mental math
To perform mental math for adding or subtracting minutes, it is helpful to understand how to convert minutes to hours. There are 60 minutes in an hour.
Let's break down the example: 17 minutes and 38 minutes.
1. First, we can combine the minutes together. Add 17 minutes and 38 minutes: 17 + 38 = 55 minutes.
2. Since 55 minutes is more than 60 minutes, we need to convert it to hours. To do this, divide the minutes by 60: 55 รท 60 = 0.92.
3. The whole number part of the result (0.92) represents the number of hours. In this case, it is 0.
4. The decimal part of the result (0.92) represents the remaining minutes after converting. To find this, multiply the decimal by 60: 0.92 x 60 = 55.2.
5. Therefore, 17 minutes plus 38 minutes equals 0 hours and 55.2 minutes.
Note: If you need to convert the result back to minutes only, you can round down the decimal portion. In this case, it would be 55 minutes.
I assume you are adding
7 + 8 = 15
Carry the 1 to the tens column.
1 + 1 + 3 = 5
17 + 38 = 55