Solve Vertical Subtraction: 72 minus 8 Step-by-Step

Question

amp;72amp;amp;  8amp;776amp; \begin{aligned} &72 \\ -& \\ &~~8 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Solution Steps

00:00 Solve
00:03 Each time we calculate a subtraction of 2 digits, and then we substitute
00:06 4 is less than
00:09 Therefore we'll subtract 1 from the tens, and add this sum to the ones
00:14 Meaning now instead of 4 we'll have 14
00:19 We subtract the ones from the ones plus ten
00:22 We substitute in the ones place
00:25 We put 0 in the missing digits
00:28 We subtract tens from tens, and substitute in the tens place
00:31 And this is the solution to the question

Step-by-Step Solution

Let us solve the subtraction problem 72872 - 8 step-by-step.

1. Write the numbers vertically, ensuring that the digits are aligned by place value:

  •     72
    -      8
    776\underline{\phantom{776}}

2. Subtract the digits in the units column:

  • Since 22 is smaller than 88, we need to borrow from the tens column.
  • Adjust the tens digit from 77 to 66 (because we borrow 10 from it) and make the units digit 2+10=122 + 10 = 12.

3. Now perform the subtraction for the units column:

  • Subtract 88 from 1212, which equals 44.

4. Now, focus on the tens column:

  • Subtract the adjusted tens digit, 66, from 00 (as there is no digit under it in the subtrahend), resulting in 66.

5. This gives us the final answer:

  • The result of 72872 - 8 is 64\mathbf{64}.

Therefore, the solution to the problem is 6464.

Answer

64