Solve Vertical Subtraction: 70 minus 14.4

Video Solution

Solution Steps

00:00 Solve

00:03 Place 0 in the missing numbers, let's position the decimal point:

00:06 We'll start subtracting from right to left

00:09 The digit is too small for subtraction, so we'll borrow from the next possible one

00:13 The next digit will decrease by 1, and our digit will increase by 10

00:18 We'll use the same method again

00:22 The next digit will decrease by 1, and our digit will increase by 10

00:33 Now let's subtract from the larger number

00:37 Calculate and substitute accordingly

00:43 Continue subtracting, calculating, and substituting accordingly

01:01 And this is the solution to the question

Step-by-Step Solution

To solve the subtraction $70 - 14.4$ , we need to perform the following steps:

Step 1: Convert $70$ to a decimal number for easier alignment, writing it as $70.0$ .
Step 2: Write the two numbers vertically, aligning to the right and with the decimal points:

$\begin{aligned} 70.0 \\ - \ 14.4 \\ \hline \end{aligned}$

Step 3: Perform the subtraction starting from the rightmost digit.
Step 4: Subtract tenths: $0$ (borrow if necessary) - $4$ becomes $10 - 4 = 6$ , since we needed to borrow 1 from $7$ , making it $6$ .
Step 5: Subtract whole numbers: $6 - 1 = 5$ and $7 - 1 = 5$ (remember we borrowed to balance the tenths).

Therefore, after the subtraction, we find that the solution is $55.6$ .