Addition and Subtraction of Decimal Fractions: Solving the problem

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 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 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:

$13.29\\-12.13\\01.16$

Let's solve the exercise in order:

We'll subtract the tenths after the decimal point:

$1-0=1$

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

$2-2=0$

$2-1=1$

And we get:

$22.1\\-12.0\\10.1$

Let's solve the exercise in order:

We'll subtract the hundreds after the decimal point:

$0-0=0$

We'll subtract the tenths after the decimal point:

$1-1=0$

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

$3-1=2$

$3-1=2$

And we get:

$33.10\\-11.10\\22.00$

Since there are only zeros after the decimal point, we can ignore them and we actually got the number: 22

Let's solve the exercise in order:

Let's subtract the hundreds after the decimal point:

$8-9=$

Since we cannot subtract, we'll borrow ten from the tenths digit after the decimal point and get:

$18-9=9$

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

$2-1-3=1-3$

Since we cannot subtract, we'll borrow ten from the tens digit of the whole number and get:

$11-3=8$

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

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

$9-1-5=3$

$1-1=0$

And we get:

$19.28\\-15.39\\03.89$

We can ignore the zero before the 3 and we got the number: 3.89

Let's solve the exercise in order:

Let's subtract the hundreds after the decimal point

$3-9=$

Since we cannot subtract, we'll borrow ten from the tenths after the decimal point and get:

$13-9=4$

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

$3-1-5=2-5$

Since we cannot subtract, we'll borrow ten from the tens digit of the whole number and get:

$12-5=7$

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

Since we borrowed ten from the tens digit of the whole number we get:

$6-1-5=0$

$1-1=0$

And we get:

$16.33\\-15.59\\00.74$

We can ignore the 0 before the 0 and therefore we got the number: 0.74

Let's solve the exercise in order:

Let's subtract the hundreds after the decimal point

$9-5=4$

Let's subtract the tenths after the decimal point:

$2-3=$

Since we cannot subtract, we'll borrow ten from the tens digit of the whole number and get:

$12-3=9$

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

Since we borrowed ten from the tens digit of the whole number we get:

$6-1-3=2$

$1-1=0$

And we get:

$16.29\\-13.35\\02.94$

We can ignore the 0 before the 2, so we got the number: 2.94

Let's solve the exercise in order:

Let's subtract the hundreds after the decimal point:

$8-9=$

Since we cannot subtract, we'll borrow ten from the tenths after the decimal point and get:

$18-9=9$

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

$2-1-9=1-9$

Since we cannot subtract, we'll borrow ten from the tens digit of the whole number and get:

$11-9=2$

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

Since we borrowed ten from the tens digit of the whole number we get:

$9-1-7=1$

$1-1=0$

And we get:

$19.28\\-17.99\\01.29$

We can ignore the 0 before the 1, so we got the number: 1.29

To avoid confusion in solving the exercise, we will first add the digit 0 to the number 12.0 as follows:

$12.00\\+29.31\\$

Now let's solve the exercise in order:

Let's add the hundreds after the decimal point:

$0+1=1$

Let's add the tenths after the decimal point:

$0+3=3$

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

$2+9=11$

We'll add ten to the ones digit before the decimal point and get:

$1+1+2=4$

And we get:

$12.00\\+29.31\\41.31$

To avoid confusion in solving the exercise, we'll first add two zeros to the number 32.1 as follows:

$32.100\\+37.032\\$

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:

$0+3=3$

Let's multiply the tenths after the decimal point:

$1+0=1$

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

$2+7=9$

$3+3=6$

And we get:

$32.100\\+37.032\\69.132$

To avoid confusion in solving the exercise, we will first add two zeros to the number 131.2 as follows:

$131.200\\+312.522\\$

Now let's solve the exercise in order:

Let's connect the thousandths after the decimal point:

$0+2=2$

Let's connect the hundredths after the decimal point:

$0+2=2$

Let's connect the tenths after the decimal point:

$2+5=7$

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

$1+2=3$

$3+1=4$

$1+3=4$

And we get:

$131.200\\+312.522\\443.722$

To avoid confusion in solving the exercise, we will first add two zeros to the number 615.3 as follows:

$123.421\\+615.300\\$

Now let's solve the exercise in order:

Let's connect the thousandths after the decimal point:

$1+0=1$

Let's connect the hundredths after the decimal point:

$2+0=2$

Let's connect the tenths after the decimal point:

$4+3=7$

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

$3+5=8$

$2+1=3$

$1+6=7$

And we get:

$123.421\\+615.300\\738.721$

To avoid confusion in solving the exercise, we will first add two zeros to the number 210.1 as follows:

$321.301\\+210.100\\$

Now let's solve the exercise in order:

Let's connect the thousandths after the decimal point:

$1+0=1$

Let's connect the hundredths after the decimal point:

$0+0=0$

Let's connect the tenths after the decimal point:

$3+1=4$

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

$1+0=1$

$2+1=3$

$3+2=5$

And we get:

$321.301\\+210.100\\531.401$