Addition to 100 worksheet for kids to identify and color true addition facts.

Problem Description:

The task is to identify and color the addition facts that are true, where the sum equals 100. The goal is to check each equation and determine if it correctly adds up to 100.

Solution Approach:

1. Understand the Task: We need to evaluate each addition equation to see if the sum equals 100.
2. Perform Calculations: Add the numbers in each equation and compare the result to 100.
3. Identify True Equations: Mark the equations that are correct (i.e., their sum is exactly 100).
4. Color the Correct Equations: Based on the evaluation, color the circles containing the true equations.

Step-by-Step Evaluation:

#### First Row:
- 50 + 50 = 100:
\( 50 + 50 = 100 \) → True
- 40 + 60 = 100:
\( 40 + 60 = 100 \) → True

#### Second Row:
- 70 + 30 = 100:
\( 70 + 30 = 100 \) → True
- 50 + 70 = 100:
\( 50 + 70 = 120 \) → False

#### Third Row:
- 85 + 50 = 100:
\( 85 + 50 = 135 \) → False
- 45 + 55 = 100:
\( 45 + 55 = 100 \) → True

#### Fourth Row:
- 90 + 10 = 100:
\( 90 + 10 = 100 \) → True
- 50 + 55 = 100:
\( 50 + 55 = 105 \) → False

#### Fifth Row:
- 65 + 35 = 100:
\( 65 + 35 = 100 \) → True
- 35 + 75 = 100:
\( 35 + 75 = 110 \) → False

#### Sixth Row:
- 5 + 90 = 100:
\( 5 + 90 = 95 \) → False
- 75 + 25 = 100:
\( 75 + 25 = 100 \) → True

#### Seventh Row:
- 95 + 10 = 100:
\( 95 + 10 = 105 \) → False
- 3 + 97 = 100:
\( 3 + 97 = 100 \) → True

#### Eighth Row:
- 90 + 20 = 100:
\( 90 + 20 = 110 \) → False
- 80 + 20 = 100:
\( 80 + 20 = 100 \) → True

#### Ninth Row:
- 91 + 9 = 100:
\( 91 + 9 = 100 \) → True

Final List of True Equations:

- 50 + 50 = 100
- 40 + 60 = 100
- 70 + 30 = 100
- 45 + 55 = 100
- 90 + 10 = 100
- 65 + 35 = 100
- 75 + 25 = 100
- 3 + 97 = 100
- 80 + 20 = 100
- 91 + 9 = 100

Final Answer:

\[
\boxed{50 + 50 = 100, 40 + 60 = 100, 70 + 30 = 100, 45 + 55 = 100, 90 + 10 = 100, 65 + 35 = 100, 75 + 25 = 100, 3 + 97 = 100, 80 + 20 = 100, 91 + 9 = 100}
\]