Addition and Subtraction of Decimal Fractions - Examples, Exercises and Solutions

First let's fill in the zeros in the empty spaces as follows:

$21.52\\+03.40\\$Note that the decimal points are written one below the other.

Therefore, the positions of the decimal points correspond and thus the exercise is written in the correct form.

First let's fill the zeros in the empty space as follows:

$006.310\\+216.222\\\$

Here We should note that the decimal points are written one below the other.

Therefore, the exercise is written in the appropriate form.

Note that the decimal points are not written one below the other. They do not correspond.

Therefore, the exercise is not written correctly.

Note that the decimal points are not written one below the other. They do not correspond.

Therefore, the exercise is not written correctly.

Let's solve the exercise in order.

First, we'll subtract the tenths after the decimal point:

$1-0=1$

Then, we'll subtract the whole numbers before the decimal point accordingly:

$2-2=0$

$2-1=1$

We obtain:

$22.1\\-12.0\\10.1$

Let's solve the exercise in order:

We'll add up the hundredths after the decimal point:

$8+1=9$

We'll add up the tenths after the decimal point:

$3+4=7$

Finally, we'll add up the whole numbers before the decimal point accordingly:

$1+3=4$

$2+1=3$

And we get:

$21.38\\+13.41\\34.79$

Let's solve the exercise in order:

We'll add up the thousandths after the decimal point:

$2+3=5$

We'll add up the hundredths after the decimal point:

$1+1=2$

We'll add up the tenths after the decimal point:

$5+3=8$

Finally, we'll subtract the whole numbers before the decimal point:

$3+4=7$

And we get:

$3.512\\+4.313\\7.825$

Let's solve the exercise in order:

We'll subtract the hundredths after the decimal point:

$9-3=6$

We'll subtract the tenths after the decimal point:

$2-1=1$

Finally, we'll subtract the whole numbers before the decimal point accordingly:

$3-2=1$

$1-1=0$

And we'll get:

$13.29\\-12.13\\01.16$

To avoid confusion in solving the exercise, we'll first add the digit 0 to the number 3.212 in the following way:

$2.1012\\+3.2120\\$

Now let's solve the exercise in order:

Let's multiply the ten-thousandths after the decimal point:

$2+0=2$

Let's multiply the thousandths after the decimal point:

$1+2=3$

Let's multiply the hundredths after the decimal point:

$0+1=1$

Let's multiply the tenths after the decimal point:

$1+2=3$

Finally, let's multiply the whole numbers before the decimal point:

$2+3=5$

And we obtain the following:

$2.1012\\+3.2120\\5.3132$

To avoid confusion in solving the exercise, we will first add the digit 0 to the number 115.32 as follows:

$115.320\\+115.102\\$

Now let's solve the exercise in order:

Let's multiply the thousandths after the decimal point:

$0+2=2$

Let's multiply the hundredths after the decimal point:

$2+0=2$

Let's multiply the tenths after the decimal point:

$3+1=4$

Finally, let's multiply the whole numbers before the decimal point accordingly:

$5+5=10$

We'll add the tens to the tens digit and get:

$1+1+1=3$$1+1=2$

And we obtain the following:

$115.320\\+115.102\\230.422$

To avoid confusion in solving the exercise, we will first add the digit 0 to the number 6.55 as follows:

$6.550\\+3.412\\$

Now let's solve the exercise in order:

Let's add the thousandths after the decimal point:

$0+2=2$

Let's add the hundredths after the decimal point:

$5+1=6$

Let's add the tenths after the decimal point:

$5+4=9$

Finally, let's add the whole numbers before the decimal point:

$6+3=9$

And we obtain the following:

$6.550\\+3.412\\9.962$

To avoid confusion, we will first add the digit 0 to the number 5.4 as follows:

$5.40\\+3.22\\$

Now let's solve the exercise in order:

We'll add the hundredths after the decimal point:

$0+2=2$

We'll then add the tenths after the decimal point:

$4+2=6$

Finally, we'll add the whole numbers before the decimal point:

$5+3=8$

Finally, simply solve the addition as follows:

$5.40\\+3.22\\8.62$

To avoid confusion, we will first add the digit 0 to the number 6.4 as follows:

$1.02\\+6.40\\$

Now let's solve the exercise in order:

We'll start by adding the hundredths after the decimal point:

$2+0=2$

We'll then add the tenths after the decimal point:

$0+4=4$

Finally, we will add the units before the decimal point:

$1+6=7$

Finally, calculate as follows:

$1.02\\+6.40\\7.42$

To avoid confusion when solving the exercise, we will first add the digit 0 to the number 112.3 as follows:

$111.25\\+112.30\\$

First we'll combine the hundredths after the decimal point:

$5+0=5$

Next we'll combine the tenths after the decimal point:

$2+3=5$

Finally, we'll combine the whole numbers before the decimal point accordingly:

$1+2=3$

$1+1=2$

$1+1=2$

This gives us:

$111.25\\+112.30\\223.55$

In order not to get confused when solving the exercise, we will first add the digit 0 to the number 321.550 as follows:

$435.001\\-321.550\\$

Now let's solve the exercise in order:

Let's subtract the thousands after the decimal point:

$1-0=1$

Let's subtract the hundreds after the decimal point:

$0-5=$

Since we cannot subtract, we will borrow a ten from the hundreds digit of the whole number (note that the tenths digit after the decimal point is also 0)

Now the tenths digit after the decimal point is 10, we will borrow from it a ten and get:

$10-5=5$

Let's subtract the tenths after the decimal point, remembering that we borrowed a ten, therefore:

$10-1-5=4$

Finally, let's subtract the whole numbers before the decimal point accordingly.

Let's remember that we borrowed a ten from the hundreds digit, therefore:

$5-1-1=3$

$3-2=1$

$4-3=1$

And we get:

$435.001\\-321.550\\113.451$