Solve Vertical Subtraction: 88 minus 9 Step-by-Step

Video Solution

Solution Steps

00:00 Solve

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

00:06 8 is less than 9

00:09 Therefore we'll subtract 1 from the tens and add this amount to the ones

00:13 Meaning now instead of 8 we'll have 18

00:18 Subtract the ones from the ones plus the ten

00:21 Place in the ones

00:25 Place 0 in the missing digits

00:28 Subtract tens from tens, and place in tens

00:31 And this is the solution to the question

Step-by-Step Solution

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

$88$
$-9$

Step 2: Start with the units column (rightmost). We have $8 - 9$ .
Step 3: Since you can't subtract 9 from 8 directly without going negative, we regroup. Borrow 1 from the tens place of 88.
Step 4: Change the tens column: $88$ becomes $7$ tens and the units column becomes $18$ (since you borrowed 10).
Step 5: Now subtract: $18 - 9 = 9$ .
Step 6: Move to the tens column (now 7): Subtract 0 from 7 (since no tens are in 9): $7 - 0 = 7$ .

Therefore, the result of the subtraction is $79$ .

To conclude, the solution to the subtraction problem is $79$ .