Solve Decimal Subtraction: 2.2 - 1.5 Step-by-Step

Video Solution

Solution Steps

00:00 Solve

00:03 We'll use long subtraction for calculation

00:08 Place the decimal point in the appropriate position

00:11 The digit is smaller than the digit we need to subtract from

00:14 So we'll borrow from the next digit

00:17 The larger digit will decrease by 1, and our digit will increase by 10

00:21 Now we'll subtract from the larger number and write

00:33 We'll continue to subtract and write accordingly

00:42 And this is the solution to the question

Step-by-Step Solution

To solve the problem $2.2 - 1.5$ , follow these steps:

Step 1: Write down the numbers vertically, ensuring the decimal points are aligned:

$2.2$

$-1.5$

Step 2: Begin subtraction from the tenths place (rightmost decimal place).
Step 3: Subtract $5$ from $2$ in the tenths place, which necessitates borrowing:
- Change $2.2$ to $2.1$ (borrowing 1 from the units place, making it $12$ tenths).
Step 4: Perform the subtraction:
- $12 - 5 = 7$ in the tenths place, with a carry back to units (effectively $1$ in the units becomes $0$ ).
- $1 - 1 = 0$ in the units place.

Therefore, the result of $2.2 - 1.5$ is $0.7$ .