This sunflower coloring page helps students practice multiplication facts for numbers 13 through 20 by solving equations to find the correct colors.

To solve this "Color by Multiplication" worksheet, we need to calculate the answer for every multiplication problem shown in the picture. Then, we match that answer to the color key at the top to see which color to use.

Here is the step-by-step breakdown of the calculations for each section:

The Color Key:
* 13: Black
* 14: Dark Pink
* 15: Light Blue
* 16: Green
* 17: Dark Purple
* 18: Light Purple
* 19: Light Pink
* 20: Orange

Calculations by Section:

Top Row (Background & Horns):
* $19 \times 1 = 19$ (Light Pink)
* $2 \times 10 = 20$ (Orange)
* $4 \times 5 = 20$ (Orange)
* $7 \times 2 = 14$ (Dark Pink)
* $19 \times 1 = 19$ (Light Pink)
* $5 \times 4 = 20$ (Orange)
* $1 \times 17 = 17$ (Dark Purple)
* $2 \times 9 = 18$ (Light Purple)
* $7 \times 1 = 7$ (Not in key, likely a mistake in the worksheet or just black/white) -> *Correction: Looking closely, it says $7 \times 1$ on the horn. Let's re-examine. Actually, it looks like $7 \times 1$. Since 7 isn't in the key, let's look at the other horn. The other horn is $1 \times 17 = 17$ (Dark Purple).*
* $2 \times 7 = 14$ (Dark Pink)
* $3 \times 6 = 18$ (Light Purple)
* $4 \times 5 = 20$ (Orange)
* $2 \times 7 = 14$ (Dark Pink) - *Wait, looking at the far right edge, it's $2 \times 7 = 14$ (Dark Pink).*

Middle Section (Head & Body):
* $6 \times 3 = 18$ (Light Purple)
* $18 \times 1 = 18$ (Light Purple)
* $9 \times 2 = 18$ (Light Purple)
* $10 \times 2 = 20$ (Orange)
* $4 \times 5 = 20$ (Orange)
* $19 \times 1 = 19$ (Light Pink)
* $10 \times 2 = 20$ (Orange)
* $2 \times 9 = 18$ (Light Purple) - *This is the smile.*
* $19 \times 1 = 19$ (Light Pink)
* $5 \times 4 = 20$ (Orange)

Lower Body & Legs:
* $18 \times 1 = 18$ (Light Purple)
* $15 \times 1 = 15$ (Light Blue)
* $13 \times 1 = 13$ (Black)
* $5 \times 3 = 15$ (Light Blue)
* $9 \times 2 = 18$ (Light Purple)
* $1 \times 13 = 13$ (Black)
* $1 \times 18 = 18$ (Light Purple)
* $3 \times 6 = 18$ (Light Purple)
* $1 \times 15 = 15$ (Light Blue)
* $3 \times 5 = 15$ (Light Blue)
* $1 \times 19 = 19$ (Light Pink)
* $2 \times 7 = 14$ (Dark Pink)
* $1 \times 2 = 2$ (Not in key) -> *Looking at the leg, it says $1 \times 2$. This is likely an error in the worksheet design as 2 is not a color option.*
* $7 \times 2 = 14$ (Dark Pink)
* $4 \times 5 = 20$ (Orange)
* $19 \times 1 = 19$ (Light Pink)
* $16 \times 1 = 16$ (Green)
* $9 \times 2 = 18$ (Light Purple)
* $20 \times 1 = 20$ (Orange)
* $6 \times 3 = 18$ (Light Purple)
* $4 \times 4 = 16$ (Green)
* $2 \times 8 = 16$ (Green)
* $8 \times 2 = 16$ (Green)
* $1 \times 16 = 16$ (Green)

Summary of Colors to Use:
* Black: Sections with answers of 13 (e.g., $13 \times 1$, $1 \times 13$)
* Dark Pink: Sections with answers of 14 (e.g., $2 \times 7$, $7 \times 2$)
* Light Blue: Sections with answers of 15 (e.g., $15 \times 1$, $3 \times 5$)
* Green: Sections with answers of 16 (e.g., $16 \times 1$, $4 \times 4$)
* Dark Purple: Sections with answers of 17 (e.g., $1 \times 17$)
* Light Purple: Sections with answers of 18 (e.g., $6 \times 3$, $9 \times 2$)
* Light Pink: Sections with answers of 19 (e.g., $19 \times 1$)
* Orange: Sections with answers of 20 (e.g., $4 \times 5$, $2 \times 10$)

Final Answer:
Color the sections based on the product of the multiplication problems using the key at the top:
- Black: Any section equal to 13
- Dark Pink: Any section equal to 14
- Light Blue: Any section equal to 15
- Green: Any section equal to 16
- Dark Purple: Any section equal to 17
- Light Purple: Any section equal to 18
- Light Pink: Any section equal to 19
- Orange: Any section equal to 20