Solve Vertical Subtraction: 64 Minus 1 Step-by-Step

Vertical Subtraction with Single-Digit Numbers

64  1776 \begin{aligned} &64 \\ -& \\ &~~1 \\ &\underline{\phantom{776}} & \\ \end{aligned}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Each time calculate subtraction of 2 digits, and then substitute
00:06 Let's start by subtracting ones from ones, and substitute in ones
00:09 Put 0 in the missing digits
00:13 Subtract tens from tens, and substitute in tens
00:16 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

64  1776 \begin{aligned} &64 \\ -& \\ &~~1 \\ &\underline{\phantom{776}} & \\ \end{aligned}

2

Step-by-step solution

To solve the problem, let's perform the subtraction using the vertical method:

Step-by-Step Solution:
Given the problem:
641 \begin{array}{c} 64 \\ - \, 1 \\ \hline \end{array}

  • Step 1: Align the numbers vertically with 64 on top and 1 on the bottom, making sure to align by the units place.
  • Step 2: Subtract the digit 1 from the digit 4 in the units column:
  • 41=3 4 - 1 = 3
  • Step 3: Since there is no subtraction needed in the tens place (as 6 is only being carried over), bring down the 6:
  • 63 63

Therefore, the result of the subtraction 641 64 - 1 is 63 \boxed{63} .

Since the correct answer matches the choices given, the correct multiple-choice answer is Choice 2.

3

Final Answer

63

Key Points to Remember

Essential concepts to master this topic
  • Alignment: Line up numbers by place value, ones under ones
  • Method: Subtract ones place first: 4 - 1 = 3
  • Check: Add your answer to the number subtracted: 63 + 1 = 64 ✓

Common Mistakes

Avoid these frequent errors
  • Subtracting the larger number from the smaller number
    Don't subtract 64 from 1 = impossible result! This happens when you confuse which number goes on top. Always put the larger number on top in subtraction problems.

Practice Quiz

Test your knowledge with interactive questions

\( \begin{aligned} &105 \\ -& \\ &~~~~3 \\ &\underline{\phantom{776}} & \\ \end{aligned} \)

FAQ

Everything you need to know about this question

Why do I put 64 on top and 1 on the bottom?

+

In subtraction, the larger number always goes on top. We're taking away 1 from 64, so 64 is the starting amount and goes on top.

What if there's no number in the tens place for the bottom number?

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That's okay! When subtracting 1 from 64, there's nothing to subtract from the 6 in the tens place, so you simply bring down the 6.

How do I line up the numbers correctly?

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Align by place value! The 1 goes under the 4 (both in ones place), and the 6 has nothing under it. Think of it as:

  • Tens place: 6
  • Ones place: 4 - 1

Can I just do 64 - 1 in my head?

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Yes! For simple problems like this, mental math works great. But learning the vertical method helps you with harder subtraction problems later, especially with borrowing.

How do I check if 63 is the right answer?

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Use addition to check subtraction! Add your answer to what you subtracted: 63 + 1 = 64. Since this equals your starting number, you're correct!

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