Solve Vertical Subtraction: 49 minus 31 Step-by-Step

Question

$\begin{aligned} &49 \\ -& \\ &31 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

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

00:10 Subtract tens from tens, and substitute in tens

00:13 And this is the solution to the question

To solve the subtraction problem by vertically aligning the numbers, we will work as follows:

Step 1: Write the numbers vertically aligning by place value.
$\begin{array}{c} 49 \\ -31~~~\\ \underline{\phantom{7600}} \\ \end{array}$
Step 2: Start subtracting from the units column (rightmost).
Subtract the units digit: $9 - 1 = 8$ .
Step 3: Move to the tens column.
Subtract the tens digit: $4 - 3 = 1$ .

The subtraction gives us a result.

Therefore, the solution to the problem is $18$ .