in subtraction: what does it mean to front-end estimation when you subtract 59 from 16

Front-end estimation is a method used in subtraction to approximate the difference between two numbers by looking only at the leftmost digits of each number.

To use front-end estimation when subtracting 59 from 16, you can follow these steps:

1. Look at the leftmost digit of each number. In this case, the leftmost digit of 16 is 1, and the leftmost digit of 59 is 5.

2. Since the leftmost digit of 59 is greater than the leftmost digit of 16, we know that the final answer will be negative.

3. Estimate the difference between the leftmost digits. In this case, the difference between 5 and 1 is 4.

4. Place this difference in front of the leftmost digit of the smaller number. So, the estimated difference will be -4.

Therefore, when you subtract 59 from 16 using front-end estimation, you would estimate the difference to be -4.