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Adding and Subtracting Decimals

Grade 6 Math Worksheets

We usually add numbers when we have different and varied data, but when we are given with a set of repeated data, we multiply.

Multiplication is a much easier way to calculate repeated data.

2 × 3 also means 2 + 2 + 2 which is equal to 6.

Example: Let’s say Jim buys 4 pens costing $3.50 each. What is the total cost?

adding and subtracting decimals

Cost of one pen = $3.50

Hence, the cost of 4 pens

= $3.50 × 4 (Which is same as 3.50 + 3.50 + 3.50 + 3.50)

= $14.00

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Adding and Subtracting Decimals - Grade 6 Math Worksheet PDF

This is a free printable / downloadable PDF worksheet with practice problems and answers. You can also work on it online.

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Importance of Place Value While Adding and Subtracting Decimals

Let’s look at this with a couple of examples

Example 1

2.87 + 3.02 + 0.006 + 123.9 + 4

adding and subtracting decimals

Example 2

Renée bought 6.75 pounds of apples, 4.5 pounds of oranges, 3.82 pounds of bananas, and 2.25 pounds of grapes. How much fruit did she buy in all?


Fruits Renée bought in all = 6.75 + 4.5 + 3.82 + 2.25 = 17.32 pounds

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Subtracting Decimals

Subtracting decimals is very similar to the way we have learned above in adding decimals.

Let’s see how.


Daniel has 2 pieces of wood measuring, 10.34 inches and 7.56 inches. How much longer is the first piece than the second one?


Subtract the lengths of 2 given wooden pieces.

10.34 – 7.56

= 2.78

So, the first piece is 2.78 inches longer than the second wooden piece.                                                

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Check Point

Add the following decimals

1. 3.25 + 1.32 + 4.67

2. 1.46 + 2.35 + 1.00

Subtract the following decimals

3. 5.82 – 1.23

4. Richard has 100.56 pounds of grain out of which he 34.156 pounds to his brother, John. How many pounds of grain is Richard left with?

5. A box of peanut butter cookies costs $3.40 and a box of oatmeal cookies costs $4.25. What is the total cost for both cookie boxes?

6. Mary has 20.752 inches of ribbon out of which she used 12.456 inches of ribbon for decorating purposes. How much ribbon is she left with?                                            

Answer key

1. 9.24

2. 4.81

3. 4.59

4. 66.404 pounds

5. $7.65

6. 8.296 inches

Gloria Mathew writes on math topics for K-12. A trained writer and communicator, she makes math accessible and understandable to students at all levels. Her ability to explain complex math concepts with easy to understand examples helps students master math. LinkedIn

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