Decimal sums have, up to this point, presented to students grouped by the place values that they are adding up together. We have focused on only adding decimals that contain a hundredths or tenths place, in some cases a thousandths place. The worksheet found in this section jump all over the place. We provide students the opportunity to learn how to add mixed digits as well where the one part of sum may contain a tenths place and the other goes all the way to the thousandths place. The following assortment of worksheets contains decimal addition problems for students to solve, and includes decimal places that go out to the tenths, hundredths, and thousandths.
Print Decimal Addition Review Worksheets
Click the buttons to print each worksheet and associated answer key.
Addition to the Hundredths
10 problems designed to drill students on moderately complex decimal addition skills. These values have a series of places that go out to the hundredths.
Adding Decimals that go to the Hundredths
There are 10 moderately complex problems for students to solve. The places go out to the hundredths.
Addition with Two Decimal Places
Contains 10 moderately complex problems. Each numeral contains two places to work with.
Addition to the Tenths
10 problems designed to drill students on simple decimal addition skills. The values go out to the tenths.
Adding Decimals that go to the Tenths
This worksheet contains 10 simple problems for students to solve. The place values go out to the tenths.
Addition with Tenths
10 simple problems that are well spaced out with plenty of room to work them out. We are working with addends that include a ones and tenths place.
To the Thousandths
10 problems designed to drill students on more complex skills. Decimal places go out to the thousandths. The fonts are all well rounded, so they make it easy to read and print.
More Practice with the Thousandths
This worksheet contains 10 more complex problems for students to solve. Decimal places go out to the thousandths.
Addition with Three Places
10 more difficult problems that will take you some more time to carry and borrow between the places. Each numeral contains three places.
Simple Decimal Addition
Students can practice adding simple decimals. All the numbers are well spaced out.
To the Tenths: Simple Addition
10 problems designed to drill students on simple skills. The values go out to the tenths.
How to Add Decimal Values
Decimal values always appear a little more complicated than ordinary numbers – learning addition, subtraction, multiplication and division of basic "whole" numbers is a huge achievement for young kids. But the issue begins when children are introduced to decimals.
This small dot, known as the decimal, changes everything about a number – it reduces its value and changes how you add, subtracts, multiplies and divide it. For example, the number 456 has a very different value as compared to the number 45.6 – even though all that apparently changes here is the presence of a small dot. In fact, not only this, but the decimal position also has a lot to do here. For example, 4.56 is a whole new number even though all we did was changed the position of the decimal point.
Now when it comes to adding decimal values, all that we have discussed above is very important. The position of the decimal point is important to note when adding decimal values – and it can change everything about your answer.
Don't worry if all this sounds a little confusing right now; here is a guide to help you add decimal values using the easiest method.
Adding Decimal Values
If you are scared of adding decimal numbers, you need to know that it is actually very simple; you need to add them like you add ordinary numbers. However, it is a little hard to add decimal numbers in a horizontal equation, so it is best to make columns to add them.
Adding Values with One Decimal Place
0.5
+ 1.2
1.7
Here all we did was add the right-hand side first (5+2=7) and then the left-hand side (0+1=1) and simply got the answer 1.7
Let’s take another example but this time with bigger numbers:
0.5
+ 2.8
3.3
This time, all we did was use the carrying technique with the whole number as well. 5+8 = 13, which means we had to write 3 down but carry 1. With carrying 1 on top, we now had to add it with 2 and 2+1=3 – hence the answer is 3.3
Adding Values with Two or More Decimal Places
Now that you know the concept, all you need to do here is add three values in the same way. You have to make a column, place each decimal number on top of each other, and add them – first the right side and then the left. Don't worry if there is more than one decimal place; it won't change anything.
For example:
0.07 0.07 0.07 0.07
2.80 2.80 2.80 2.80
+ 0.50 + 0.50 + 0.50 + 0.50
7 .37 3.37
Here you can see how we added multiple decimal places and more than one number as well. We used the same trick first to add the right side (7+0+0 = 7) and then the next column (0+5+8 =13). Here, since we can't put 13, we had to carry 1 to the right-most side, after which we got 3 (because (1+0+2+0 = 3).
Adding Values with Varying Decimal Place
Sometimes we also get questions to add numbers or values with varying decimal places, which means where one value would have one decimal, the other can have 2 decimal places. In such a situation, all you have to do is place the decimal points under each other. Unlike adding whole numbers where we keep all the numbers toward the right side, here, we only have to stack the decimal numbers.
Final Word
It is essential to learn and understand simple concepts like adding decimal values on your own; instead of relying on a calculator, it is better to use your time manually to simple addition and subtractions as we did above.