Math addition coloring activity featuring a butterfly with numbers and a color code for educational fun.

This is a "color by number" math worksheet featuring butterflies. To solve it, you need to perform the simple addition in each section and then color that section according to the key provided at the top.

Here is the step-by-step solution:

1. Understand the Key: At the top of the page, there is a color key that assigns a color to each number from 2 to 11.
* 2 = brown
* 3 = pink
* 4 = purple
* 5 = gray
* 6 = green
* 7 = yellow
* 8 = orange
* 9 = red
* 10 = light blue
* 11 = dark blue

2. Solve the Math Problems: Go through each outlined section of the butterfly and flowers and calculate the sum of the numbers shown.

3. Color the Sections: Once you have the sum for a section, find that number in the key and color the section with the corresponding color.

Let's solve a few examples to illustrate:
* A section has `3+4`. The sum is 7. According to the key, 7 = yellow. So, color this section yellow.
* Another section has `5+5`. The sum is 10. According to the key, 10 = light blue. So, color this section light blue.
* A section on the flower has `1+4`. The sum is 5. According to the key, 5 = gray. So, color this section gray.

The Final Solution:
To complete the worksheet, you must repeat this process for every single section. There is no single final answer; the "solution" is the fully colored image. By correctly adding the numbers and applying the colors, you will reveal a colorful picture of butterflies and flowers.

For instance:
- All sections with a sum of 2 (e.g., `1+1`, `0+2`) should be colored brown.
- All sections with a sum of 3 (e.g., `1+2`, `0+3`) should be colored pink.
- All sections with a sum of 4 (e.g., `2+2`, `3+1`) should be colored purple.
- And so on, following the key until all sections are colored.

Once all calculations are done and all sections are colored, the activity is complete.