Adding Doubles Worksheet Worksheets - Free Printable

Let's solve the Addition Doubles worksheet step by step.

This worksheet asks you to add a number to itself (i.e., double it). These are called "doubles" in math. Here’s how we solve each problem:

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Left Column:

1. $ 1 + 1 = 2 $
2. $ 2 + 2 = 4 $
3. $ 3 + 3 = 6 $
4. $ 4 + 4 = 8 $
5. $ 5 + 5 = 10 $
6. $ 6 + 6 = 12 $
7. $ 7 + 7 = 14 $
8. $ 8 + 8 = 16 $
9. $ 9 + 9 = 18 $

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Right Column:

1. $ 2 + 2 = 4 $
2. $ 6 + 6 = 12 $
3. $ 4 + 4 = 8 $
4. $ 7 + 7 = 14 $
5. $ 8 + 8 = 16 $
6. $ 3 + 3 = 6 $
7. $ 1 + 1 = 2 $
8. $ 9 + 9 = 18 $
9. $ 5 + 5 = 10 $

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✔ Final Answers:

#### Left Side:
- 1 + 1 = 2
- 2 + 2 = 4
- 3 + 3 = 6
- 4 + 4 = 8
- 5 + 5 = 10
- 6 + 6 = 12
- 7 + 7 = 14
- 8 + 8 = 16
- 9 + 9 = 18

#### Right Side:
- 2 + 2 = 4
- 6 + 6 = 12
- 4 + 4 = 8
- 7 + 7 = 14
- 8 + 8 = 16
- 3 + 3 = 6
- 1 + 1 = 2
- 9 + 9 = 18
- 5 + 5 = 10

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🎯 Explanation:

Doubles are important because they help build fluency in addition and are often used as mental math shortcuts. For example, knowing that $ 6 + 6 = 12 $ helps with problems like $ 6 + 7 $, which is just one more than a double.

These facts are foundational for learning more complex arithmetic later on.

Let me know if you'd like this turned into a printable answer sheet!