Subtract 499 from 686: Vertical Format Arithmetic Problem

Video Solution

Solution Steps

00:00 Solve

00:03 Each time we consider a shortage of 2 digits, and then we'll place

00:06 6 is less than 9

00:13 Therefore we subtract 1 from the tens and add this amount to the ones

00:17 So now instead of 6 we will have 16

00:20 We subtract the ones from the ones plus ten

00:24 We place in the ones

00:30 7 is less than 9

00:36 Therefore we subtract 1 from the hundreds and add this amount to the tens

00:42 So now instead of 7 we will have 17

00:46 We subtract the tens from the tens plus ten

00:51 We place in the tens

00:55 We subtract hundreds from hundreds, and place in the hundreds

00:59 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we'll follow the vertical subtraction method:

First, subtract the ones place: $6 - 9$ . Since $6$ is less than $9$ , we need to borrow from the tens place.
Turn $8$ in the tens place of $686$ into $7$ , and the ones place becomes $16$ .
Now subtract the ones place: $16 - 9 = 7$ .
Then subtract the tens place: $7 - 9$ . Again, we need to borrow.
Turn $6$ in the hundreds place of $686$ into $5$ , and the tens place becomes $17$ .
Subtract the tens: $17 - 9 = 8$ .
Finally, subtract the hundreds place: $5 - 4 = 1$ .

Therefore, the result of the subtraction $686 - 499$ is $187$ .