Solve Vertical Subtraction: 358 minus 79 Step-by-Step

Video Solution

Solution Steps

00:00 Solve

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

00:06 8 is less than 9

00:11 Therefore subtract 1 from the tens, and add this amount to the ones

00:17 In other words, now instead of 8 we will have 18

00:20 Subtract the ones from the ones plus ten

00:24 Place in ones

00:31 4 is less than 7

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

00:42 In other words, now instead of 4 we will have 14

00:48 Subtract the tens from the tens plus ten

00:51 Place in tens

00:54 Place 0 in the missing digits

00:57 Subtract hundreds from hundreds, and place in hundreds

01:03 And this is the solution to the problem

Step-by-Step Solution

To solve this subtraction problem, we'll perform vertical subtraction with regrouping as necessary:

Step 1: Align the numbers vertically, ensuring that digits are in the correct place value columns.
Step 2: Begin with the units column: Subtract 9 from 8. Since 8 is smaller than 9, we need to regroup by borrowing from the tens column.

We take 1 ten from 5 in the tens column. The tens digit becomes 4, and we add 10 to 8 in the units column, making it 18.
Now, subtract 9 from 18, which equals 9.

Step 3: Move to the tens column: Subtract 7 from 4 (after borrowing). Since 4 is smaller than 7, we need to regroup again.

We borrow 1 hundred from the hundreds column; 3 becomes 2. The tens digit becomes 14.
Now, subtract 7 from 14, which equals 7.

Step 4: Finally, handle the hundreds column: Subtract 0 from 2 (after borrowing), resulting in 2.

Therefore, the solution to the subtraction is $279$ .